MINNEAPOLIS (WCCO) — A 9-year-old boy who nearly drowned in a residential pool on Sunday died Tuesday afternoon, according to the Hennepin County Sheriff’s Office.

Authorities were called at about 3:16 p.m. Sunday to Peach Circle on a report of a 9-year-old boy found unresponsive in a residential swimming pool. The boy was at a private residence for a pool party with about a dozen people attending.

READ MORE: After Fatal Shooting Outside School, District 287 Superintendent Supports Safety Recommendations, Including Metal Detectors

Authorities say parents were present at the time of the incident.

READ MORE: Charges: Jhmahl Shannon Said He Strangled Man After Unwanted Sexual Encounter

The Hennepin County Sheriff’s Office was assisted at the scene by the South Lake Minnetonka Police Department. What led to the incident remains under investigation.

MORE NEWS: Most Adults Go Back To Read Books They Loved As Children

The name of the boy and his cause of death have not been released.