A 3-year-old boy, apparently overlooked in a day care center van, died after spending nearly 10 hours in the vehicle as the heat index soared to 105 degrees.

The boy was left in the van about 8:15 a.m. Monday as children were taken to the program run by First Baptist Church Daycare of Baltimore Street Inc., police said."The van was then locked and left unattended for the remainder of the day," police spokeswoman Elisabeth Doehring said Tuesday. The boy's name was not released.

The day care manager found the unconscious child in the van about 6 p.m. and called 911. Rescue workers tried unsuccessfully to revive him.

There was no immediate word on whether charges were being considered.