Las Vegas officials are investigating allegations that a firefighter violated rules by having sex at a fire station. The probe comes just months after claims of widespread sexual misconduct by personnel. A document alleges that some supervisors tried to cover up the rendezvous by intimidating a whistleblower. At one point, one fire captain told the whistleblower to “shut the f—- up,” the firefighter wrote. The whistleblower said in the document that a woman and her daughter spent time at the station. Earlier this year, a former Las Vegas EMT said sex was commonplace in fire stations across the valley. The technician, Mallissa Barthule, estimated that she had sex in 13 different fire stations. In April, former Capt. Richard Loughry was arrested and charged with having sex with a 15-year-old prostitute inside Station 47. City officials denied a Review-Journal request for documents related to violations of fire department rules that prohibit sex while on duty. Sex, cover-up at Las Vegas fire station alleged