A Jersey City man says he believed he was becoming the victim of a home invasion, but the real trouble began when police arrived.

Mathias Bolton, 34, is accusing Jersey City police officers of brutality. He says plainclothes officers answered his 911 call and never identified themselves. He says they pushed him around and yelled at him.

Bolton says he fought back and ended up with bruises, open sores, a twisted ankle and cracked ribs.

He says uniformed officers arrived soon after and started beating him up as well.

Jersey City police and the mayor's office say they are standing by the police report filed by two of the officers, which says they identified themselves and that Bolton started the struggle.

Bolton was charged with aggravated assault on a police officer and resisting arrest. The charges were later downgraded. An internal investigation into the incident is under way.