The U.S. Centers for Disease Control and Prevention has confirmed an amoeba infection caused 9-year-old Jack Ariola Erenberg to contract a rare form of meningitis, the Associated Press reports.
The rare, lethal and incurable brain infection is caused by a microorganism found in the water.
Health officials say the boy recently swam in Lily Lake in Stillwater -- which remains closed.
Jack was taken off life-support and died earlier this month.
This is the second known case in Minnesota -- both are linked to Lily Lake in Stillwater. Seven-year-old Annie Bahneman, of Stillwater, died in 2010.