Investigators say a 5-year-old boy was found unresponsive in a pool at the Hilton Suites in Auburn Hills after 911 was called Friday at 10 p.m.
A hotel patron removed the victim from the pool and another one performed CPR. Police and fire personnel took over CPR and the Auburn Hills Fire Department transported the child to St. Joseph's Hospital in Pontiac.
The child was pronounced deceased at the hospital.
He was with a group for a child's birthday party. He went down to the pool with a 13-year-old boy and two 10-year-old kids.
An adult was not present when the kids went to the pool, although a sign at the pool clearly states an adult must be present when children swim
The child was under supervision of a neighbor; his parents were not at the party.
His name has not yet been released.
Auburn Hills police is looking into possible criminal charges.