Champion boxer M.S. Dinusha Lakshan had been abducted, assaulted and burnt by a group of persons in Kandy.
He was found in serious condition on the same night, said his mother.
Lakshan had been sleeping at his home at Hospital Lane, Kandy when a person took him outside purportedly to discuss a deal about a motorcycle.
Men who came in two three-wheelers then attacked him with iron bars and took him away by force, she said.
He was later found dumped near a playground in Hantana and was rushed to Kandy General Hospital.
Another of his relatives claims that persons from a law enforcement agency were behind the incident.