WATERLOO, Neb. (AP) — Douglas County authorities say a 3-year-old Waterloo boy has died after being pulled from under a dock at a housing development lake last weekend.

The Douglas County Sheriff’s Office said in a news release Thursday that Aspen Seemann was taken to Children’s Hospital & Medical Center in Omaha shortly after he was taken from the water Saturday at West Shores Lake. A deputy who’d been dispatched around 3 p.m. saw the boy was lying on the beach and that resuscitation efforts were underway.

The 203-acre lake and surrounding development are situated about a mile southwest of Waterloo.

The news release didn’t say when Aspen died. A Sheriff’s Office spokesman didn’t immediately return a call from The Associated Press. An autopsy is scheduled for Friday.

The incident is being investigated.