Roseville police were called to Wayne Malone's apartment twice in August, once because he drank himself unconscious and the second time because he threatened to kill people in the building.
Police made another visit on Thursday night, but this time they shot the 55-year-old dead.
David Page, who lives across from Malone's unit, was home when police arrived at 8:27 p.m. after a 911 call made by a woman who sounded like she was being choked.
"I heard them say, 'Put the gun down,'" Page said Friday.
Police repeated the order two or three times, Page said, before firing about a half-dozen shots.
"Hit the floor! They're shooting outside!" Page ordered everyone in his apartment.
Minutes later Page and his girlfriend, Erica Brown, stepped over Malone's body, sprawled in the hallway, after being told to leave by police. Neither slept all night.
"Every time I closed my eyes, I saw the body," Brown said. "I'm still shook up."