A cargo vessel, A-520 (MV Invincible) was sunk this evening due to an under water explosion while moored at the Ashroff jetty in Trincomalee harbour, today (May 10)., defence sources said.

No casulties were lost due to the explosion.

A-520 was a merchant vessel built in 1970's and handed over to the Sri Lankan Navy, following a court order after it was apprehended while transporting 254 illegal migrants off Tangalle in 2003, defence sources added.