TERRE HAUTE, Ind. — An inmate has died following an apparent fight with another inmate at a federal prison in western Indiana, officials said.

The Federal Bureau of Prisons said inmate Mario Waters, 35, was found unresponsive about 12:20 a.m. Monday at the U.S. Penitentiary in Terre Haute following a “perceived altercation” with another inmate.

Despite life-saving efforts, Waters was later pronounced dead Monday at a Terre Haute hospital.

The FBI has been notified about Waters’ death, the Bureau of Prisons said.

Waters was sentenced in the Eastern District of Arkansas to life for conspiracy to commit sex trafficking of a minor. He had been incarcerated at the high-security federal prison in Terre Haute since April 21, 2023, the Tribune-Star reported.

Terre Haute is a located about 70 miles (113 kilometers) west of Indianapolis.

Newsday high school sports editor Gregg Sarra and his staff choose their top picks in the annual fantasy draft.  Credit: Newsday/Drew Singh

Newsday's 2026 high school football fantasy draft Newsday high school sports editor Gregg Sarra and his staff choose their top picks in the annual fantasy draft.

Newsday high school sports editor Gregg Sarra and his staff choose their top picks in the annual fantasy draft.  Credit: Newsday/Drew Singh

Newsday's 2026 high school football fantasy draft Newsday high school sports editor Gregg Sarra and his staff choose their top picks in the annual fantasy draft.

SUBSCRIBE

Unlimited Digital AccessOnly 25¢for 6 months

ACT NOWSALE ENDS SOON | CANCEL ANYTIME