Overview

• Full name: Richard Barnett
• Age at disappearance: 35
• Date last seen: October 1, 2018
• Last known location: Oakland, Alameda County, California
• Other associated locations: Sacramento County and Yolo County, California
• Case classification: Missing adult
• Current case status: Listed as missing in publicly accessible case information; no confirmed resolution located
• NamUs reference: MP136593
• Known aliases: SHAMAD and Tumad
• Physical description: Approximately 5 feet 5 inches tall and 170 pounds
• Main circumstances: Richard Barnett was described as a transient individual who lost contact with his family in 2018. Available case information also references law enforcement contacts in Sacramento and Yolo counties, but does not establish when those contacts occurred or whether they confirmed his whereabouts after his reported disappearance.

Richard Barnett’s disappearance presents an unresolved question for his family and anyone who may have encountered him in Northern California. Although Oakland is identified as his missing-person location, references to Sacramento and Yolo counties suggest that information from several jurisdictions could be relevant to establishing his movements.

The available records do not establish that Barnett was the victim of a homicide or another crime. His whereabouts and the circumstances surrounding the loss of family contact remain unclear.

Detailed Case Breakdown

Richard Barnett Missing Since 2018 in Oakland, California: An Unresolved Disappearance

Case Summary

• Full name: Richard Barnett
• Age at disappearance: 35
• Date last seen: October 1, 2018
• Last known location: Oakland, Alameda County, California
• Other associated locations: Sacramento County and Yolo County, California
• Case classification: Missing adult
• Current case status: Listed as missing in publicly accessible case information; no confirmed resolution located
• NamUs reference: MP136593
• Known aliases: SHAMAD and Tumad
• Physical description: Approximately 5 feet 5 inches tall and 170 pounds
• Main circumstances: Richard Barnett was described as a transient individual who lost contact with his family in 2018. Available case information also references law enforcement contacts in Sacramento and Yolo counties, but does not establish when those contacts occurred or whether they confirmed his whereabouts after his reported disappearance.

Richard Barnett’s disappearance presents an unresolved question for his family and anyone who may have encountered him in Northern California. Although Oakland is identified as his missing-person location, references to Sacramento and Yolo counties suggest that information from several jurisdictions could be relevant to establishing his movements.

The available records do not establish that Barnett was the victim of a homicide or another crime. His whereabouts and the circumstances surrounding the loss of family contact remain unclear.

Background and Circumstances of Richard Barnett’s Disappearance

Who Was Richard Barnett?

Richard Barnett was 35 years old when he was reported last seen on October 1, 2018, in Oakland, California.

Publicly available missing-person information describes Barnett as transient, indicating that he did not necessarily have a consistent permanent residence. The record also identifies two aliases, SHAMAD and Tumad, which may be important when reviewing historical records or identifying individuals who knew him under another name.

Few personal details have been publicly documented. Available sources do not reliably establish his occupation, education, family relationships, or circumstances before 2018. Those details should not be assumed.

The central concern described in his missing-person information is that Barnett lost contact with his family in 2018. The public record does not explain the circumstances of their last communication or the efforts family members made to locate him.

October 1, 2018: Reported Last-Seen Date

October 1, 2018, is the last-seen date associated with Barnett’s missing-person listing.

Oakland, a city in Alameda County, is identified as the location connected with his disappearance. However, the publicly accessible information does not provide a specific street address, neighborhood, shelter, business, or other location where he was last independently confirmed to have been present.

It also does not establish whether October 1 was the date of a documented sighting, the date of his last family contact, or an administrative date assigned to the missing-person record.

This distinction matters because the exact circumstances of his disappearance have not been publicly explained.

Connections to Sacramento and Yolo Counties

One notable detail in Barnett’s missing-person information is the reference to law enforcement contacts in Sacramento County and Yolo County.

Both counties are located in Northern California, outside Alameda County.

The reference may be relevant to investigators attempting to reconstruct his whereabouts, but the available summary does not provide dates, locations, agency names, or descriptions of the encounters.

It would therefore be inaccurate to conclude that Barnett was definitively seen in either county after October 1, 2018.

The references do, however, identify additional jurisdictions that could be important in clarifying his history.

Investigation History and Available Evidence

Missing-Person Records

Barnett is associated with NamUs reference MP136593, as reproduced in a publicly accessible missing-person listing.

NamUs, the National Missing and Unidentified Persons System, is a national resource used to support investigations involving missing individuals and unidentified remains.

The available listing provides Barnett’s name, age, last-seen date, location, aliases, physical description, and a brief account of his loss of family contact.

However, the accessible secondary listing does not identify the primary investigating police agency or provide a local law enforcement report number.

The NamUs reference should not be confused with an NCIC number or a local police case number.

Searches and Investigative Activity

No detailed public account of organized searches for Barnett was located in the sources reviewed.

Specifically, the available information does not establish whether investigators conducted ground searches, reviewed surveillance recordings, interviewed particular witnesses, examined financial records, or searched locations in Oakland, Sacramento County, or Yolo County.

The absence of publicly available documentation does not prove that those investigative steps never occurred. It means they cannot currently be reported as confirmed actions.

Witness Information and Physical Evidence

No publicly verified witness statement describing Barnett’s disappearance was located.

Likewise, the available sources do not identify recovered personal belongings, abandoned vehicles, forensic evidence, or physical evidence associated with a suspected crime.

No publicly confirmed DNA match, genetic genealogy identification, or discovery of human remains was found that could be reliably linked to Barnett’s case.

Without such documentation, there is no factual basis for describing the disappearance as a confirmed homicide.

The Importance of Aliases and Identification

The aliases SHAMAD and Tumad are among the limited identifying details publicly associated with Barnett.

Aliases can be useful when examining historical encounters, outreach records, or other documentation, particularly when an individual may have used different names in different settings.

However, there is no publicly confirmed evidence that the use of either alias contributed to Barnett’s disappearance or prevented investigators from locating him.

Theories and Unresolved Questions

Could Barnett Have Continued Traveling?

Because Barnett was described as transient and had documented associations with multiple Northern California counties, it is reasonable to consider whether he traveled between communities.

This is a possibility rather than a confirmed explanation.

The available record does not establish his intended destination, transportation arrangements, or movements after the reported last-seen date.

Could He Have Lost Contact Without Becoming a Crime Victim?

Another unresolved possibility is that Barnett remained alive but became disconnected from his family.

Missing adults may lose contact with relatives for many reasons, but no particular explanation has been established in Barnett’s case.

His housing circumstances alone do not demonstrate that his disappearance was voluntary, that he wished to avoid contact, or that he experienced a medical or personal crisis.

Was Foul Play Involved?

There is no publicly verified evidence in the sources reviewed establishing that Barnett was abducted, assaulted, murdered, or otherwise subjected to criminal violence.

No suspect or person of interest was publicly identified in the material located.

Foul play cannot be categorically ruled out on the basis of these limited records, but it must not be presented as an established investigative conclusion.

Questions That Remain Unanswered

Several important questions remain:

• When and where was Barnett last independently confirmed to be present?
• When did his family last communicate with him?
• When did the law enforcement contacts in Sacramento and Yolo counties occur?
• Which agency maintains the primary missing-person investigation?
• Have investigators received credible sightings or information since 2018?
• Has his identity been compared against relevant unidentified-person records?

Answers to these questions could help clarify the chronology, but they have not been established by the publicly accessible information reviewed.

Latest Publicly Available Investigative Updates

Case Information Reviewed Through October 27, 2026

The most specific publicly accessible case information located identifies Richard Barnett as missing from Oakland since October 1, 2018, and associates him with NamUs reference MP136593.

A secondary missing-person directory continues to reproduce the case information. However, the presence of an online listing does not independently confirm that a police investigation has recently been reviewed or that investigators have developed new evidence.

No publicly confirmed recent investigative developments were located.

In particular, no verified announcement was found concerning an arrest, a named suspect, newly identified remains, a forensic identification, or a confirmed recovery of Barnett.

No publicly documented cold-case review or new family appeal specific to this Richard Barnett was located.

The available information is therefore insufficient to establish a recent investigative breakthrough or a definitive resolution.

Distinguishing This Case From Other Missing Persons Named Richard Barnett

Care is necessary because other missing-person cases involve individuals with the same first and last names.

Richard Lloyd Barnett disappeared in Galveston, Texas, in April 1982. Richard Ray Barnett disappeared from Grangeville, Idaho, in August 1982.

Those are separate cases and should not be confused with the Richard Barnett reported missing from Oakland in 2018.

Information concerning those individuals, including their family histories, investigative agencies, physical descriptions, and case numbers, does not apply to the California disappearance.

Conclusion and Public Appeal for Information

Richard Barnett’s disappearance remains a matter of concern because so little is publicly known about the circumstances surrounding his loss of contact with family in 2018.

His reported connection to Oakland, together with references to Sacramento and Yolo counties, provides several potential avenues for clarifying his history. Yet the publicly available records do not establish his movements after the reported last-seen date or explain why family contact ended.

Anyone who knew Barnett, encountered someone using the names SHAMAD or Tumad, or possesses credible information about his whereabouts is encouraged to contact law enforcement.

The California Department of Justice maintains a statewide missing-person information service and tip hotline at 1-800-222-FIND (1-800-222-3463).

When providing information, callers should identify the case as Richard Barnett, missing from Oakland since October 1, 2018, and reference NamUs MP136593.

Even a seemingly minor detail may help investigators establish a more complete chronology. Information should be provided directly to appropriate authorities rather than treated as a confirmed sighting or investigative finding on social media.