Authorities say children are among four people who died in a house fire in the Detroit enclave of Hamtramck.

Fire Chief Paul Wilk says crews responding about 1:50 a.m. Tuesday couldn't reach the victims, whose bodies were found upstairs in the two-story home.

Wilk says an intense fire burned the rear of the home as firefighters arrived. Crews worked in around zero-degree temperatures to extinguish the blaze.

The cause of the fire is under investigation. Wilk didn't immediately confirm the number of children who died or names of those killed.

The Detroit Free Press reports the Detroit Fire Department assisted putting out the fire and worked with the Hamtramck department on the investigation.

Wilk told WWJ-AM "we had a lot of help" but that "doesn't always make a difference."