Updated at 4.27pm: Customs officers arrested two men after seizing 2.4 kilograms of heroin worth $880,000 on Sunday at Chek Lap Kok International Airport, a spokesman said on Monday. The heroin was discovered in two waist girdles in the luggage of the pair, who were both local men, aged 42 and 45. The two were about to depart for Sydney when they were arrested. They will be charged with 'trafficking in a dangerous drug', the spokesman said. He said this was the first time this year a plan to smuggle heroin to Australia had been uncovered by customs at the airport. Heroin is a highly addictive 'hard-drug' which can severely damage the health of users. Addicts may develop collapsed veins, infections in the linings of their hearts, as well as abscesses, cellulitis and liver disease, health experts say. Convicted heroin traffickers face the death penalty in some Asian countries, including Malaysia, Singapore and China. In Hong Kong, police are concerned about the recent rise in drug trafficking cases. Drugs like ecstasy and 'ice' have become popular with some young people at 'rave' parties in the territory.