Police department sources said the tip-off was given by Nawagamuwa police OIC Manjula Silva on information given him by a sergeant of Ilavalai police.
Based on this, the PNB raided the ship and found 101 kilos of heroin.
When recommending the officers, the PNB has suggested a Rs. 50,000 cash prize for the Nawagamuwa OIC and the Ilavalai police sergeant.
However, the PNB director, OIC Rangajeewa and other officers have been recommended with promotions as well as a Rs. 500,000 cash prize.