Virginia State Police are investigating the death of a woman by Lynchburg Police Department gunfire after an hours-long incident Sunday night into Monday morning.

Police officers and Lynchburg Fire Department medics responded to a residence on the 2900 block of Triangle Place, situated a few blocks off Campbell Avenue toward William Marvin Bass Elementary School, at 10:35 p.m. Sunday for reports of a suicidal woman, according to a news release from the Lynchburg Police Department.

“Information provided by the caller indicated an adult female subject was armed with a knife and had already harmed herself,” the release states. “The caller also said there was another individual inside the residence in extreme danger.”

Trained negotiators and officers tried to help the woman while she was “barricaded in a room” for a few hours, the release states.

The woman then emerged from the room with a knife at about 2 a.m. Monday and “advanced on the officers in a threatening manner,” according to the release. The officers used non-lethal force when the woman refused to drop the knife, including using a Taser, then shot her when she “continued to advance on the officers,” the release states.