Kugathasan was injured in his stomach when he was fired at by soldiers stationed at Bar Street, on the other side of the lagoon.
None of his friends who were in the lagoon with Kugathasan were wounded, the sources said.
Meanwhile Mamankam Loganathan,30 was wounded when a policewoman's gun went off accidentally at a check post near offices of the Health Department on the Tricomalee road, Saturday.