Steven Pratt is accused of beating his mum to death after his family throws him a party to welcome him home from jail.
A convicted murderer has beaten his mother to death just two days after he was released from prison, authorities have said.
The 45-year-old Steven Pratt, who has spent 30 years behind bars, faces new murder charges in Atlantic City.
He was arrested at the scene after his mother, 64-year-old Gwendolyn Pratt, was found dead at her home on Sunday.
He was apparently having an argument with his mother when he assaulted her.
An autopsy determined she died from massive blunt injuries to the head, Atlantic County prosecutor Jim McClain said in a statement.
The Pratt family had thrown a welcome-home party for the freed inmate, neighbours said.
“It’s so devastating,” neighbour Ruan Tilghman-Pugh told the Press of Atlantic City.
“You just never know what people are going through.”
Pratt was 15 when he shot and killed his next-door neighbour, Michael Anderson, in 1984.
He was tried as an adult and convicted of first-degree murder in 1986. He received a 30-year prison sentence and was freed on Friday.
According to the Press of Atlantic City, Pratt appealed his sentence three times, but was unsuccessful. At the trial, he testified that Mr Anderson was like a father to him.
He is currently being held on $1m bail.