Five others have been injured.
According to police media spokesperson SP Ruwan Gunasekara, two gunmen who had arrived on a motorbike had carried out this shooting.
Police also suspect that a T-56 firearm has been used for the shooting and the incident had sparked from a clash between two groups of fishermen.
The injured have been rushed to the Tangalle hospital while the remains of the victims too, have been placed there.
Further investigations are underway.