CHICKAMAUGA, Ga. » The death of a northwest Georgia infant is under investigation after he was apparently left in a vehicle for about two hours.

The Atlanta Journal Constitution reports the 11-month-old boy’s death occurred Saturday in Chickamauga, which is about 115 miles northwest of Atlanta, according to the Walker County Sheriff’s Department.

According to a statement by the sheriff’s department, the infant had been with members of the family, including grandparents, who were returning from church.

The boy’s mother, who works at night, was asleep. When the mother woke, she asked about the child.

They found the child in the car and called 911 at 5:21 p.m. In an effort to save the infant’s life, they administered CPR. The child was transported to a hospital, where he was pronounced dead.