Police say an 11-month-old boy died after he and his twin sister were left in a hot car for hours while their father was at work.

The incident happened at Sunny King Honda in Oxford, Alabama, about 60 miles east of Birmingham.

Police were called to the car dealership just before noon, and when they arrived learned that the twin boy and girl had been left in the vehicle for over three hours.

The baby boy died and his sister is said to be doing OK. The Calhoun County coroner confirmed the boy’s death was heat related.

Police have not released the names of the children or their father.

According to the National Safety Council, 43 children have died in hot car deaths in the U.S. so far this year.