A 40-year-old man has been arrested at the airport and charged with trafficking in a dangerous drug after customs officers said they found approximately 3.8 kilogrammes of suspected heroin in his check-in luggage.

Officers said the suspect had arrived on Tuesday on a flight from Penang, Malaysia, when the contraband was found.

The seized drugs have an estimated street value of HK$1.9 million, according to the Customs and Excise Department.

The man is scheduled to appear at the West Kowloon Magistrates' Courts on Wednesday.