MINNEAPOLIS (AP) — Four Minneapolis officers involved in the arrest of a black man who died in police custody were fired Tuesday, hours after a bystander’s video showed an officer kneeling on the handcuffed man’s neck, even after he pleaded that he could not breathe and stopped moving.

Mayor Jacob Frey announced the firings on Twitter, saying “This is the right call.”

The man’s death Monday night was under investigation by the FBI and state law enforcement authorities. It immediately drew comparisons to the case of Eric Garner, an unarmed black man who died in 2014 in New York after he was placed in a chokehold by police and pleaded for his life, saying he could not breathe.

In a post on his Facebook page, Frey apologized Tuesday to the black community for the officer’s treatment of the man, who was later identified as 46-year-old George Floyd, who worked security at a restaurant.

“Being Black in America should not be a death sentence. For five minutes, we watched a white officer press his knee into a Black man’s neck. Five minutes. When you hear someone calling for help, you’re supposed to help. This officer failed in the most basic, human sense,” Frey posted.

Police said the man matched the description of a suspect in a forgery case at a grocery store, and that he resisted arrest.

The video starts with the shirtless man on the ground, and does not show what happened in the moments prior. The unidentified officer is kneeling on his neck, ignoring his pleas. “Please, please, please, I can’t breathe. Please, man,” said Floyd, who has his face against the pavement.

Floyd also moans. One of the officers tells him to “relax.” The man calls for his mother and says: “My stomach hurts, my neck hurts, everything hurts … I can’t breathe.” As bystanders shout their concern, one officer says, “He’s talking, so he’s breathing.”

But Floyd stops talking and slowly becomes motionless under the officer’s restraint. The officer does not remove his knee until the man is loaded onto a gurney by paramedics.

Several witnesses had gathered on a nearby sidewalk, some recording the scene on their phones. The bystanders become increasingly agitated. One man yells repeatedly. “He’s not responsive right now!” Two witnesses, including one woman who said she was a Minneapolis firefighter, yell at the officers to check the man’s pulse. “Check his pulse right now and tell me what it is!” she said.

At one point, an officer says: “Don’t do drugs, guys.” And one man yells, “Don’t do drugs, bro? What is that? What do you think this is?”

The Hennepin County medical examiner identified Floyd but said the cause of death was pending.

Floyd had worked security for five years at a restaurant called Conga Latin Bistro and rented a home from the restaurant owner, Jovanni Thunstrom.

He was “a good friend, person and a good tenant,” the restaurateur told the Star Tribune. “He was family. His co-workers and friends loved him.”

Ben Crump, a prominent civil rights and personal injury attorney, said he had been hired by Floyd’s family.

“We all watched the horrific death of George Floyd on video as witnesses begged the police officer to take him into the police car and get off his neck,” Crump said in a statement. “This abusive, excessive and inhumane use of force cost the life of a man who was being detained by the police for questioning about a non-violent charge.”