A former Bexar County Sheriff’s Office deputy was arrested Monday after an investigation found that the deputy had used unnecessary force on an inmate last December, the Bexar County Sheriff’s Office said.

SAN ANTONIO – Bexar County Sheriff Javier Salazar and Public Integrity Unit investigators arrested an off-duty deputy in connection with a case involving the assault of an inmate, officials said. The Public Integrity Unit obtained an arrest warrant for Victor Damon Collins on a charge of assault-bodily injury. The Bexar County Sheriff’s Office said an inmate made an outcry that Collins had assaulted him on Sunday, and the Criminal Investigation Division began investigating the incident before Collins was arrested. Use of force incidents were not logged in any reports involving the inmate, Salazar said Tuesday, but the inmate had “pretty substantial facial injuries.”As investigators continued looking into the case, a probationary deputy admitted to them he witnessed the alleged assault, Salazar said. AdSalazar also issued Collins a notice of proposed dismissal, BCSO said.