TEXAS (TIP): Police say a 4-month-old boy died but his sister survived after their father left them in a hot car for at least 40 minutes in South Texas.

Corpus Christi Police Sergeant Marc Harrod says the father drove home with the children on Sept 9 afternoon, but entered the family home without them. Harrod says the father remembered the children at least 40 minutes later and summoned help.

The baby died at a Corpus Christi hospital. His 16-month-old sister was treated at the scene and released to relatives.

Police have not released the names.

Harrod says the children’s mother was not home during the incident.