EL PASO, Texas—A gun accidentally fired in a courthouse Monday, injuring two federal agents when a bullet ricocheted, authorities said.

The injuries to the Border Patrol agent and the deputy U.S. marshal were non-life threatening, Border Patrol spokesman Doug Mosier said.

U.S. Marshal’s Service spokesman Jerry Payan said the gun went off in a secured hallway on the courthouse’s third floor. He declined to discuss details of how the shooting happened or whose gun was involved.

Mosier said it does not appear that the weapon belonged to the Border Patrol agent, and that the officers were injured by a “ricocheting round.”

Both agents were transported to an El Paso hospital. Their names were not immediately released.