COUNCIL BLUFFS, Iowa (AP) — Pottawattamie County authorities are investigating the death of a 5-month-old boy who was found unresponsive after taking a nap at a daycare provider in Council Bluffs.

The sheriff’s office say the child, who was identified as Lane Thomas, was found unresponsive late Wednesday afternoon. He was pronounced dead at a local hospital.

The sheriff’s office says the daycare provider told investigators she had put Thomas down for a nap at about 2:30 p.m. Wednesday. He was found unresponsive at 4 p.m. and was taken to a hospital by a rescue squad.

An autopsy was planned for Thursday. The investigation is continuing.