Philadelphia Mayor Jim Kenney issued a citywide curfew on Wednesday night after multiple nights of protests following the fatal police shooting of 27-year-old Black man Walter Wallace Jr. Wallace was killed in Philadelphia by two officers on Monday when they responded to a report of a person with a knife.

Shaka Johnson, an attorney for Wallace’s family, reported that Wallace was experiencing a psychological episode that prompted his mother to call for an ambulance when the incident occurred on Monday. However, the police arrived first. The family’s attorney also stated that Wallace’s wife urged the officers to stand down, explaining that Wallace had a bipolar disorder. Despite Wallace’s wife’s attempts to de-escalate the situation, officers fired their guns at Wallace after he “advanced towards the officers” with a knife. Wallace was taken to the hospital after the shooting, where he was pronounced dead.

Following the shooting, demonstrators took to Philadelphia’s streets over the next two nights to protest the shooting. City officials said the protests turned violent at times and reported that some people broke into stores and stole merchandise in West Philadelphia and Port Richmond. They also stated on Wednesday afternoon that 81 people had been arrested during Tuesday night’s demonstrations.

Kenney denounced the looting and property damage that has taken place during the protests at a press conference on Wednesday. Kenney stated, “By looting, people are not only hurting retail businesses that have struggled in the midst of the pandemic, but they’re doing a great disservice to many others who want to exercise their First Amendment rights by protesting.”

Police Commissioner Danielle Outlaw announced on Wednesday that the police department would release 911 calls and body-worn camera footage of the shooting “in the near future.” Outlaw said there would be “a fair and thorough investigation” of the incident.

The curfew was in effect from 9 PM Wednesday and lasted until 6 AM Thursday. The city requested several hundred troops from the Pennsylvania National Guard to assist in controlling the widespread demonstrations.