Three men believed to form part of a drug ring bringing cocaine and cannabis into Malta have been arrested by police in an anti-drugs operation that stretched over two days.

Officers found around €70,000 in cash, two kilogrammes of cannabis and two kilogrammes of a white powder which tests revealed was a cutting agent often used by drug dealers selling cocaine.

Cocaine is often cut with a variety of adulterants and substitutes, allowing dealers to bulk it up and increase their profit.

All three men – two Britons and one Maltese – live in Malta, with homes in Naxxar, Żabbar and Msida. Police did not provide their specific ages but said they ranged in age between 28 and 37.

The anti-drugs operation began when officers searched the car of one of the men in Naxxar and found two kilogrammes of cannabis, packaged and ready for sale. They then searched his home and found the cutting agent.

Officers then searched the home of a British national who lives in Msida. There, they found more than €70,000 in cash and two watches with an estimated €24,000 value.

In a statement announcing the arrests, police said they suspect the three of forming part of an organised crime ring which imports “substantial” amounts of illicit drugs into Malta.

All three arrested men are expected to be arraigned on Friday or Saturday. They will most likely be charged with drug trafficking crimes, aggravated possession of dangerous substances and possibly money laundering.

Magistrate Natasha Galea Sciberras is leading an inquiry into the case.