The family of an 11-year-old boy in Indianola, Mississippi, who was shot by a police officer after he called 911 for help is suing the city, the police chief and the officer accused of the shooting.

The officials were accused of negligence and the use of excessive force in the lawsuit filed Tuesday by 11-year-old Aderrien Murry’s mother, Nakala Murry.

Aderrien called 911 in the early hours of May 20 after his mother told him to because she was afraid for her safety and that of the children in the house. She had received “an unexpected visit from an irate father of one of her minor children,” according to the lawsuit, obtained by USA TODAY.

Officer Greg Capers responded and instructed everyone to come outside the house, according to the lawsuit. As Aderrien “was coming around the corner of the hallway that led into the living room area, he was instantly shot by Defendant Officer Capers,” the lawsuit says.

The suit accuses Capers of failing to assess the situation to respond appropriately before firing his weapon and seeks at least $5 million in damages.

Mississippi Department of Public Safety press secretary Bailey Martin told USA TODAY last week that the Mississippi Bureau of Investigation is “assessing this critical incident and gathering evidence.”

Previously:11-year-old Mississippi boy who called 911 shot by responding officer: ‘Why did he shoot me?’

‘I actually thought I was about to lose my life’

Aderrien has been released from the hospital after suffering a collapsed lung, lacerated liver and fractured ribs. It felt “like a big punch to the chest,” the boy told “Good Morning America” in an interview that aired Tuesday.