articleThe Brief A 5-year-old child drowned Saturday afternoon at Lake Minnetonka Regional Park. The Hennepin County Sheriff’s Office is investigating and has not released further details. Authorities are investigating after a 5-year-old child drowned at Lake Minnetonka Regional Park in Minnetrista Saturday afternoon. Lake Minnetonka Regional Park drowningWhat we know:The Hennepin County Sheriff’s Office said a bystander spotted the child in the water, and lifeguards quickly pulled the child out and started CPR. Drowning under investigationThe backstory:Lake Minnetonka Regional Park is a popular spot for families, especially during the summer months, and typically has lifeguards on duty.