Three Sri Lankan soldiers have been shot dead in the Tamil-majority northern Jaffna peninsula's Chavakachcheri town, military said on Friday.
The three were shot dead at a military sentry point near a Hindu temple on Thursday night, military spokesman Brigadier Nihal Hapuarachchi said.
The initial investigations had revealed that a soldier had gone berserk killing two colleagues before turning the gun on himself, Hapuarachchi said.
A private dispute is suspected to be the cause for the firing.
Jaffna was once a stronghold of Tamil Tigers, which fought with Sri Lankan forces for years for a separate Tamil state. The entire leadership of the group was elimintaed in 2009 by Sri Lankan forces.