DETROIT >> City outreach staff will visit families who call to report an imminent loss of housing, one of many steps after two Detroit children recently died in a van in below-freezing temperatures, the mayor said Thursday.

“This cannot ever happen again,” Mayor Mike Duggan said.

The mother of Darnell Currie Jr., 9, and A’millah Currie, 2, had called the city on Nov. 25 to say their temporary housing was about to end, but no one followed up and she didn’t call back, Duggan said.

Homeless outreach teams, meanwhile, were not looking in cars for people who needed shelter, he said.

Darnell and A’millah were among five children and two adults in a van in a casino parking garage on Feb. 10. The two siblings were taken to a hospital, likely victims of exposure to the cold, when others noticed they weren’t breathing. They were subsequently pronounced dead.

The van had stopped producing heat while the temperature was under 20 degrees Fahrenheit (minus-6.6 degrees Celsius).

“This is something that’s going to be hard to accept for a long time, that we had the beds in place,” Duggan said of shelter beds.

Police said the family chose the casino garage that night because it was free and provided access to restrooms.