LAS VEGAS - A 4-year0old boy diead after he was left in a hot car for 90 minutes in Las Vegas.

Outside temperatures reached 100 degrees Thursday, in Las Vegas.

Police said they were called to the scene just after 6:30 p.m. after the boy was found in a car parked at a home in downtown Las Vegas. He was brought to Sunrise Hospital and Medical Center where they pronounced him dead.

Police said the boy's grandfather told them he had the boy with him while running errands, and they got back home around 5 p.m. No arrests have been made.

Kids and Cars, a non-profit that tracks child deaths and injuries in and around cars, says this is the 16th case in the country this year.