Court records say the chief and assistant chief of a volunteer fire department in a small town south of Dallas knew of a sexual assault at their station, but didn't report it to authorities and instructed the suspects and victim not to report it.

Officials say the fire chief, 31-year-old Gavin Satterfield, and assistant fire chief, 34-year-old Billy Getzendaner, were arrested Thursday afternoon and later released on bond. They face charges of tampering with a witness.

Five volunteer firefighters were arrested Monday on aggravated sexual assault charges in an attack that's been described by a prosecutor as a "rite of initiation" at Emergency Service District 6 Volunteer Fire Department in Waxahachie.

A message left for Getzendaner wasn't immediately returned. A working number for Satterfield wasn't located.