A Haddon Township police officer shot and killed a man armed with a knife early Sunday, the New Jersey Attorney General’s Office said.

Around 1 a.m. Sunday, the Haddon Township Police Department received a call reporting an attempted robbery at an apartment building on West Crystal Lake Avenue in the Westmont section, according to a statement issued by the Attorney General’s Office.

Responding officers encountered a man in the stairwell who was “armed with a knife,” according to the statement, and an officer shot him “during an interaction.”

Officers provided medical care to the injured man while waiting for emergency medical personnel, according to the release. The man was then transported to Cooper University Hospital, where he was pronounced dead about an hour later.

The police found a knife at the scene, according to the Prosecutor’s Office statement.

Police have not released the names of the man who died or the police officer who shot him.

The Attorney General’s Office is handling the investigation, as required by New Jersey law in circumstances of fatal shootings by law enforcement officers. A grand jury will evaluate the results of the investigation to decide whether any officers involved in the shooting should be charged.