Firefighters found two bodies believed to be connected to an Amber Alert issued hours earlier for a missing 4-year-old girl.
The fire broke out in an occupied apartment building on Detroit’s northwest side.
The damage may significantly decrease water pressure to battle fires.
In separate blazes, a baby died and two firefighters were injured, one of them seriously.
Motor City Muckraker tracked every fire as part of a one-year project that led to reforms and the ousting of top fire officials.
David Madrigal was preparing to retire next year to enjoy his life as a grandfather.
“I have a victim in the rear stairwell,” a firefighter radioed to the chief.
Less than a month after Mayor Duggan fired the head of the Detroit Fire Department, another top official is gone.
Three firefighters were injured trying to rescue residents.
For the first time since the 1970s, Detroit is on pace to record fewer than 90 fires during the three-day Devil’s Night period.