Updated at 2.02pm: A 33-year-old Sierra Leone passenger was found with heroin and arrested by Hong Kong Customs officers at Chek Lap Kok International Airport on Wednesday morning, a spokesman said. The man, who was in transit to Guangzhou, was carrying 1.5 kilograms of heroin (74 pellets) with a street value estimated to be worth $550,000. He had arrived in Hong Kong from Pakistan via Dubai. The 33-year-old was being detained in Queen Elizabeth Hospital for further investigation and would be charged with 'trafficking in a dangerous drug', the spokesman said. The maximum penalty for drug trafficking in Hong Kong is life imprisonment and a $5 million fine. Customs Drug Investigation Group Head Cheung Chi-kwong will hold a press briefing on the case later on Thursday afternoon. In the first nine months of 2004, there have been 74 cases of dangerous drugs found at the airport, involving an estimated value of $20,935,000. This was a 25.5 per cent decrease from the same period last year.