CNN  — 

A citywide curfew in Philadelphia was in effect Wednesday night after two nights of protests and looting following the fatal police shooting of Walter Wallace Jr.

Pennsylvania National Guard members will guard businesses to prevent looting, but troops will not be deployed until later this week, officials said.

Wallace, a 27-year-old Black man, was shot and killed Monday while holding a knife during a confrontation with police in West Philadelphia. His family has said he suffered from bipolar disorder and was in crisis during the time of the shooting. A family attorney said Wallace was a mental health patient who was prescribed lithium.

Authorities are investigating what two responding officers, who didn’t have Tasers, knew when they answered a call about a man with a knife.

Demonstrators gather near the location where Walter Wallace Jr. was killed.

Police Commissioner Danielle Outlaw said in a virtual news conference that she will meet soon with Wallace’s family to show them the footage from the officers’ body-worn cameras and other items from the investigation.

“We plan on releasing premise history (of calls to the home), audio of 911 calls and bodycam footage of the discharging officers in the near future. Before that happens, however, we’ll be meeting with members of Mr. Wallace’s family, to ensure they get an opportunity to view the materials first,” she said.

Wallace’s family has asked that protesters keep their demonstrations peaceful to respect his memory.

Speaking to CNN’s Chris Cuomo on Tuesday night, Wallace’s father asked that people honor his son’s memory and his family’s grieving.

“All this violence and looting. I don’t want to leave a bad scar on my son and my family with this looting and chaos stuff,” Walter Wallace Sr. told CNN. “So I want my son’s name and everybody to stop this. Give my son a chance. And the family like we’re decent people.”

“Everybody to have respect for our family, to pray for us. Cut it out. The looting is a mindset and it won’t bring my son back. And it won’t, it will escalate things to get worse instead of better,” he added.

Police estimated 1,000 people gathered in a park Tuesday night, then marched to a nearby police precinct while there was looting by another large group in a different part of the city.

There were 81 arrests between Tuesday and Wednesday for various offenses including assault on police, burglary, robbery and disorderly conduct, department officials announced.

The city will reevaluate the curfew, which lifts at 6 a.m., daily, Mayor Jim Kenney said in the news conference with the police commissioner.

Violence erupts during protests

A large, peaceful group of protesters marched through the Cobbs Creek section of Philadelphia on Tuesday night.

The demonstrators could be heard chanting, with one person yelling, “Whose street?” and the crowd responding, “Our Street!” along with “Say his name!” with the crowd yelling back, “Walter Wallace!”

But the peaceful protest turned violent when the crowd was met by a group of police officers near Philadelphia Police 18th District.

Hundreds of demonstrators marched in West Philadelphia over the death of Walter Wallace Jr., a Black man killed by police in Philadelphia on Monday.

A CNN crew covering the protest witnessed several people in the crowd throw rocks, light bulbs and bricks at the police. Police said some people threw something that appeared to be blood.

One protester with an ax moved toward police and hacked the front of a police car before leaving the area, the CNN crew said.

As the situation escalated, police moved various vehicles into the area and took up posts on the street.

In light of the violence, police requested that people stay indoors. “The Philadelphia Police Department is requesting that all residents in the 12, 16, 18, 19, 24, 25, and 26th Districts remain indoors except when necessary,” a tweet from the Philadelphia Office of Emergency Management said Tuesday night. “These areas are experiencing widespread demonstrations that have turned violent with looting.”

Police also reported that a large crowd, which they estimated to be approximately 1,000 people, looted businesses in the Port Richmond section of Philadelphia on Tuesday night. It is unclear whether they were associated with the protest.

Aerial footage from CNN affiliate KYW showed people looting a Foot Locker and a Walmart, emerging with televisions and other products.

Several hundred Pennsylvania National Guard members were in Philadelphia to assist law enforcement at the request of Gov. Tom Wolf and the state Emergency Management Agency, spokesman Lt. Col. Keith Hickox said in a statement. Mike Dunn, a spokesman for the mayor, said the city had formally requested the assistance of the National Guard.

Violence and looting also took place Monday night, leading to dozens of arrests and injuries to officers, most the result of thrown objects. One officer was struck by a pickup and taken to the hospital with a broken leg and other injuries, police said.

Businesses were looted, and five police vehicles and one fire vehicle were vandalized, police said. Outlaw said 91 people were arrested, including 11 on charges of assaulting police and 76 for burglary.

Several businesses in the area closed stores Tuesday night in anticipation of additional demonstrations following damage during Monday night’s protests.

Family attorney says 3 calls made to police

The Philadelphia District Attorney’s Office said in a statement Tuesday it is investigating the fatal officer-involved shooting of Wallace.

The Special Investigations Unit responded to the shooting “shortly” after it occurred, and was on scene with other DA office personnel investigating “as we do jointly with the PPD Officer-Involved Shooting Investigation Unit, in shootings and fatalities by other means involving police,” the statement from District Attorney Larry Krasner said.

Walter Wallace Jr., pictured with his mother, was shot and killed by police.

Police said the incident started with a call about a man with a knife, KYW reported. “Responding officers witnessed a male on the block. Immediately they noticed he had a knife in his possession and he was brandishing it, and waving it erratically,” Philadelphia Police Sgt. Eric Gripp told KYW.

Shaka Johnson, an attorney for Wallace’s family, said relatives had made at least three calls to authorities that day. The initial call for was an ambulance, he said.

“The police are who arrived first,” Johnson told reporters Tuesday night. “The call that was initially put into 911 dispatch was for medical intervention. The ambulance never made it.”

Johnson said Wallace’s brother called for an ambulance and Wallace’s wife told police her husband “was in crisis.” Relatives said police had been at the address earlier that day.

It’s unclear how many calls police responded to on Monday. CNN reached out to police and the family attorney for clarity.

At a Tuesday news conference, police officials did not answer questions about whether officers were there earlier in the day or had previously interacted with Wallace. They did not say what officers knew of the situation prior to arrival.

Wallace and his wife, Dominique Wallace, were newlyweds, according to Johnson, who said she’s expecting a baby girl “any day now.”

“They were just trying to solidify their family,” Johnson said.

Taser shortage among officers

There are about 4,500 patrol officers on the Philadelphia police force and the department has 2,300 Tasers, Outlaw said in the news conference Wednesday.

The department gets $900,000 a year for the electrical weapons, enough to buy a few hundred per year, she said.

“What the converasation is today is how do we ensure that we get enough Tasers so that every officer – at least every officer that’s working in operations – has a Taser,” Outlaw said.

She said she feels the city is supportive of that goal.

“We are supportive of every officer having access to them. The issue is cost,” Kenney said. “It’s the issue of resources. We can try to find grants and other things … but we have a lot of needs and a lot less money than we used to have.”

According to its website, the Philadelphia Police Department is the fourth largest in the nation, with 6,600 sworn personnel.

Former top cop: ‘It’s so complicated’

Former Philadelphia Police Commissioner Charles Ramsey told CNN’s “New Day” the case is not as clear-cut as some other police shootings because Wallace was armed.

“Well, I mean, listen, you never want deadly force to be the outcome of any encounter,” Ramsey said. “And I can see in the tape that they were backing up and so forth. At some point in time, the distance was beginning to close between themselves and the individual.”

Ramsey said the officers had seconds to make “crucial decisions.”

“This is why it’s so complicated and this is why police need the adequate tools and training, but more importantly there needs to be a beef-up of mental health services, not only in Philly, but in cities around the country so that police will not have to be dispatched,” Ramsey said.

“But having said that, I can’t think of any mental professional that would have done this without calling 911, because the person was armed,” he added.

JaHiem Simpson, who took video of the police shooting, told CNN there was some commotion and arguing before police were called.

When police arrived at the man’s house, Simpson said a person who he later was told was Wallace’s mother told police that Wallace had mental health issues.

Simpson said Wallace exited the house with a knife and everybody told him to put the knife down. Simpson said he saw officers pull their guns as soon as they saw the knife.

The video shows Wallace walk around a parked car into the street, and the two officers can be seen backing up as he walks towards them. Multiple shots ring out as police fire, striking him. Sgt. Gripp told KYW that an officer took Wallace in his police cruiser to Presbyterian Hospital, where he died.

This video still shows the fatal police-involved shooting of Walter Wallace Jr.

“It could have been dealt with in a different way,” Wallace Sr. told CNN Tuesday night, adding he believes the officers “could have called a superior to handle the situation.”

Johnson, the attorney for the Wallace family, said that if the officers had had a less lethal option, the outcome could have been different.

“The officers did not have what they needed. There wasn’t a less-than-lethal option available. They didn’t have Tasers,” Johnson explained. “A person is in mental decline and in crisis.”

The attorney said additional equipment and training for these situations should be available to officers.

“Every training academy you give officers a badge. You give them a gun. You give them rounds of ammunition. You train them how to kill. You train them how to hit head shots,” Johnson said, adding “You (are) setting them up and you are setting the community up. It is a lose-lose situation.”

CNN’s Brynn Gingras, Linh Tran, Andy Buck, Ganesh Setty, Laura Ly, Lauren del Valle, Mirna Alsharif, Richard Davis and Steve Almasy contributed to this report.