The Birmingham Police Department is investigating the death of a 3-year-old boy who was trapped inside a hot car while in the custody of an worker contracted by the Alabama Department of Human Resources,

"The interior temperature of the car where KJ was trapped likely exceeded 150 degrees," an attorney for the family said.

The boy, who was in foster care, was being transported between a supervised visit and day care, his aunt said. State lawmakers said they were seeking answers and the police were investigating.