Police are looking for a man who jumped into the Detroit River

Officials are searching for a person who reportedly jumped into the Detroit River early Thursday, a spokesman for the U.S. Coast Guard Sector Detroit said.

The USCG was notified of the incident at 4:30 a.m. and immediately launched a search operation, a spokesperson told The News.

Detroit Sector officials dispatched a helicopter to assist in the search and refueled the plane before sending it off again shortly before 8 a.m.

USCG boats were also on the river searching near Belle Isle, along with crews from the Detroit Fire Department and boats from the Canadian Joint Rescue Coordination Center on the Canadian side of the water, the spokesman said.

The operation was still a rescue mission Thursday morning, the spokesman said.

The Detroit Fire Department has deployed a search and rescue boat to assist other agencies in the search, a spokesperson told The Detroit News. Officials do not know why the person jumped into the river.

On Thursday, the rescue operation began after Detroit firefighters saved the man from the river last week.

Dispatchers received a 911 call at about 3:30 a.m. on Oct. 21 about a man in the river screaming for help, Detroit Fire Department officials said. Emergency personnel saved the man and took him to the hospital.