WILLIAMSBURG, Va. (WAVY) — An assault at Virginia Peninsula Regional Jail in Williamsburg is under criminal investigation.

VPRJ Superintendent Colonel Roy Witham confirmed the assault in a release on Tuesday, saying it happened Sunday night around 7:45 p.m.

The incident involved two inmates at VPRJ, one of whom was taken to a local hospital for treatment. That inmate was released from custody and is on an unsecured bond due to injuries sustained.

The other inmate believed to be behind the assault is still at VPRJ.

The James City County Police Department has taken over the investigation into the assault. VPRJ says it’s not releasing the names of the inmates involved for privacy reasons and to protect the integrity of JCCPD’s investigation.

Witham added he “extends prayers for the family of the person involved and will provide full cooperation with JCCPD.”