PHILADELPHIA (AP) — The family of a Black man killed when Philadelphia police officers fired a dozen rounds in a shooting caught on video had called for an ambulance to get him help with a mental health crisis, not for police intervention, their lawyer said Tuesday.

Additionally, Walter Wallace’s wife is pregnant and is scheduled to have labor induced in coming days, the lawyer, Shaka Johnson, told reporters from the steps of a family home. Wallace’s father planned a statement later Tuesday, Johnson said.

Philadelphia officials anticipated a second night of unrest Tuesday, and a Pennsylvania National Guard spokesperson told The Inquirer that several hundred guardsmen were expected to arrive in the city within 24 to 48 hours.

Chief Police Inspector Frank Vanore said earlier at a news conference that police had received a call Monday about a man screaming and that he was armed with a knife.

The two officers each fired at least seven rounds — at least 14 total shots — but could not say how many times Wallace, 27, was struck.

Wallace’s father, Walter Wallace Sr., earlier told The Philadelphia Inquirer that his son was on medication and struggled with his mental health.

“Why didn’t they use a Taser?” he asked.

The officers had not been interviewed as of Tuesday afternoon, Police Commissioner Danielle Outlaw said.