OPP and emergency crews were called after a man failed to surface while swimming in the Muskoka River Sunday afternoon shortly before 1 p.m.
Police say the man was swimming in the river with a friend when he went into distress and slipped under the water. He was found by bystanders and CPR was tried unsuccessfully.
Roberto Carmona, 20 of North York was taken to a local hospital where he was pronounced deceased.
This investigation is ongoing.