According to the lawsuit:

DiPiazza and her boyfriend kept a loaded handgun, which belonged to her boyfriend, on their nightstand after DiPiazza thought that someone had tried to break into their apartment a few months earlier.

DiPiazza and her boyfriend got into an argument early the morning of May 18, 2014, and she locked herself in the bedroom with the gun. Police arrived about 1:27 a.m. and went into the apartment using a key about 10 minutes later.

DiPiazza was still in the bedroom.

DiPiazza briefly opened the door, holding the gun to her head, but closed the door after Pihlaja aimed a gun at her and told her to drop her weapon.

A negotiator, Officer Cary Leerek, arrived and spoke to DiPiazza through the closed door, eventually persuading her to open the door a little so they could hear each other better.

DiPiazza said she was upset at her boyfriend but wanted to see him one last time, and said that she wanted to talk to her father. She said she only wanted to hurt herself, not others.

About a half-hour after Leerek arrived, DiPiazza opened the bedroom door and stepped into the living room, still holding the gun to her head. Officers shouted for her to drop the gun, then opened fire.