A four-hour standoff Monday a Grand Forks apartment complex ended when police found the body of a man officers say was inside with a gun.

Officers evacuated parts of the Autumn Ridge apartment complex on the 2400 block of 36th Avenue South after responding to a welfare check at 7:26 p.m., according to a news release issued early Tuesday morning. The evacuation was in response to learning the man had a rifle, officers said.

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The Grand Forks Regional SWAT and Crisis Negotiations Bomb teams were activated.

Officers made several attempts to contact the man before using a flashbang device in the apartment "to initiate a response from the male" and "ascertain whether or not he was still inside," according to the release.

SWAT and bomb team members eventually opened the door to where the man was located and deployed a robot. It was then discovered that the subject was deceased, officers said.

No one else was injured in the incident, Grand Forks Police Sgt. Duane Simon said. Officers did not fire their weapons and had the scene cleared shortly after 11 p.m., according to the release.

There is no evidence to indicate the man shot at other people, Simon said.

An autopsy is being performed on the man and police have not released the cause of death or his identity.

The investigation is active and those with information are encouraged to call (701) 787-8000.