Just hours before she shot and wounded three people at YouTube headquarters, Nasim Aghdam calmly told police who found her sleeping in her car that she was having family problems and had left her home.
During the 20-minute interview with officers early Tuesday, she did not mention being angry with YouTube or having accused the company of suppressing her video posts. She gave no indication she was a threat to herself or others.
"It was a very normal conversation. There was nothing in her behavior that suggested anything unusual," said Mountain View Police Chief Max Bosel.
Later that day, she went to a gun range before walking through a parking garage into a courtyard at YouTube's campus south of San Francisco, where she opened fire with a handgun and wounded three people. She then killed herself.
The sequence of Aghdam's activities emerged Wednesday as police continued gathering information about the attacker and her motives.
Agents with the Bureau of Alcohol, Tobacco, Firearms and Explosives searched two Southern California homes where Aghdam had lived. Spokeswoman Ginger Colbrun would not confirm the locations but reporters saw agents entering homes in the communities of Menifee, southeast of Los Angeles, and 4S Ranch, north of San Diego.