DALLAS (CBSDFW.COM) – Dallas Police officers may have operated “outside of proper departmental protocol” but with a supervisor’s orders when a Dallas Fire Rescue firefighter was taken into custody Thursday, according to a media release.

The afternoon release issued by the Dallas Police Department says firefighter Jesus Ventura was charged with deadly conduct for allegedly firing a gun inside Fire Station #46 at 716 W. Commerce St. on March 8.

Ventura was arrested at his home Thursday afternoon. The media release says the arrest occurred despite a Public Integrity Unit operation, which was designed to get Ventura to surrender.

“It appears these officers may have conducted their operation outside of proper departmental protocol, but with the approval of their supervising lieutenant,” the release says.

A single media outlet was on-scene during the arrest, the release states. DPD has launched an internal investigation as to why the supervisor approved the arrest rather than waiting for Ventura to turn himself him.

The department offered no further comment.