Three men have been arrested on suspicion of trafficking HK$10 million worth of liquid methamphetamine into Hong Kong from Thailand in air cargo declared as frozen shrimp.

Customs officials revealed on Saturday they had seized about 12kg of the illegal drug – also known as Ice – at Hong Kong International Airport a day earlier. It was found packed into ice pockets and mixed with the shrimps in six foam boxes.

The liquid meth was hidden in six foam boxes.

Three men, aged from 23 to 47, were arrested at the airport and in Tsuen Wan on Friday.

In Hong Kong, trafficking in a dangerous drug is punishable by up to life imprisonment and a HK$5 million fine.

Earlier in September, Hong Kong customs officials confiscated more than HK$150 million worth of liquid meth disguised as coconut oil and flown into the city from Mexico – the agency’s largest airborne seizure of the drug in two decades.