During an operation on Thursday, officers discovered a cache containing 40 packets of cocaine weighing 42 kilos aboard the Baltic Stream ship that had traveled from South Africa under a Maltese flag.

On Friday officers seized a further 20 kilograms of cocaine aboard the Baltic Meridian vessel that recently arrived from Estonia under a Saint Vincent and Grenadines flag, the spokesman said.

The drugs have an approximate street value of $6 million. An investigation is underway.