SHREVEPORT (AP) — Police in Shreveport have announced the arrest of a third Shreveport Fire Department employee in connection with an investigation of alleged prostitution.

A police news release says 37-year-old Billy Glass of Haughton was arrested Tuesday on a warrant charging one count each of cruelty to the infirm and principal to prostitution. Two others — 26-year-old Clint Wayne Richardson of Keithville and 50-year-old Derrick Harris of Shreveport — have been arrested on identical charges since an investigation began in late July.

Police say the investigation followed a complaint about alleged criminal activity at a Shreveport fire station.

Police have not released details but say additional arrests are possible. The Caddo Parish clerk’s office had no information on court dates or attorneys for the suspects as of Tuesday afternoon.