Officials are fearing the worst as they continue to search the lake for a missing swimmer.
At about 5:30 on Saturday, eight people on a boat stopped to swim in an area between Gyro and Kinsmen Park, before heading back toward Bennett Bridge an hour later.
When they realized a member of the group was missing, they contacted RCMP, who led an unsuccessful search of the area.
On Sunday, police and COSAR searched the lake for the man, who's been identified as a 23-year-old from Kamloops, but couldn't find him.
Police say in the coming days, an underwater recovery team will be searching the lake.