A piece of torso of a person and diving equipments were found floating near the drowned Sri Lankan Naval ship, suggesting the handiwork of a suicide bomber in destruction of the vessel last week, an official said on Monday.

The Navy is currently investigating the Saturday dawn explosion that ripped through a navy logistic ship, A 520 (MV Invincible).

Navy divers have recovered body parts of the suspected LTTE suicide cadre from the waters where the Tigers sank a navy cargo ship in the Trincomalee harbour on Saturday, the navy spokesman D K P Dassanayake said.

"Our divers found parts of lower portion of the body of the suspected suicide cadre body along with diving equipment from the sea," he said, adding the identity of the suicide bomber has not been established.

The navy believes the suicide cadre had used a suicide jacket for the blast as only the lower part of the body was recovered.

The tiger militants had earlier claimed that the naval ship explosion was the handiwork of their Commandos from "Kangkai Amaran unit".

The LTTE also claimed the underwater attack was carried out when the supply vessel was loaded with explosives to be transported to KKS Harbour in Jaffna.

However, officials denied that the ship was being loaded with explosives.

No one was injured due to the blast which according to the LTTE led to the sinking of the ship within 13 minutes of explosion.