Who Is Anthony Chavez?
Anthony "Tony" Chavez was a long-time resident of Los Alamos, New Mexico, and a retired employee of Los Alamos National Laboratory (LANL) — the birthplace of the atomic bomb and the cornerstone of America's nuclear weapons program since the Manhattan Project. He retired from the laboratory in 2017 after many years of service. The specific nature of his work and any security clearances he held have not been publicly disclosed.
Those who knew Chavez described him as fit and healthy for his age — he was a regular hiker on the high-altitude trails of Pueblo Canyon surrounding Los Alamos. He was, in the words of family, "very fit and slender, healthy and clearheaded." His disappearance was, by all accounts, completely out of character.
Los Alamos National Laboratory — Why It Matters
Los Alamos National Laboratory is not an ordinary research facility. Established in 1943 in the remote Jemez Mountains of northern New Mexico as the headquarters of the Manhattan Project, it produced the world's first nuclear weapons. Today it remains one of two primary facilities in the United States responsible for the design, testing, and certification of nuclear warheads in the US arsenal. Its employees — at every level — operate under some of the most stringent security clearance requirements in the federal government.
Two separate individuals connected to Los Alamos — Chavez and Melissa Casias — vanished within eight weeks of each other in 2025, from the same part of northern New Mexico.
The Circumstances of His Disappearance
On the morning of 4 May 2025, Chavez walked out of his home on 37th Street in the Denver Steels neighbourhood of Los Alamos on foot. He left behind his wallet, car keys, cigarettes, and phone. His car remained locked in the driveway. There were no signs of forced entry, struggle, or disturbance. He was formally reported missing on 8 May 2025.
The Los Alamos Police Department conducted exhaustive searches, including coordination with multiple agencies, cadaver dog teams in Pueblo Canyon and surrounding trails, review of surveillance footage, and distribution of flyers to local businesses. All searches returned nothing. His bank account went silent the day after his disappearance and showed no further activity.
As of April 2026 — nearly one year after he was last seen — Anthony Chavez has not been found. No body has been recovered. No confirmed sightings have been made. No evidence of criminal activity has been publicly confirmed.
Why His Case Is Being Scrutinised
Investigators and commentators have noted a striking pattern in how Chavez disappeared: on foot, without identification, money, communication device, or transport. This mirrors the circumstances of several other cases in this series, including Steven Garcia, McCasland, and to some degree Jason Thomas — all of whom left their personal items behind and vanished without apparent preparation.