A Police Sergeant and two suspected members of a drug trafficking syndicate were charged with drug trafficking and other offences on Thursday by the city's graft watchdog Independent Commission Against Corruption (ICAC).

The ICAC launched the operation code named "Phegda" on Tuesday following a complaint alleging that a police officer might have corruptly harbored drug activities.

Paul Lai Kwong-hing, the 38-year-old police sergeant, was charged with one count of trafficking in a dangerous drug, which alleged that Lai unlawfully trafficked in 17 grams of heroin on May 25.

Chu Kam-yuen, 47, unemployed, was charged with one count of trafficking in a dangerous drug, which alleged him of unlawfully trafficking in heroin between April 1 and May 25.

Wong Kam-pang, 45, unemployed, faced one count of unlawfully trafficking in seven grams of heroin on May 24, 2010.

Magistrate Abu Bakar bin Wahab adjourned the cases of Lai, Chu and Wong until May 31, June 29 and June 28 respectively for mention, pending further enquiries by the ICAC. The defendants were remanded in the custody of the Correctional Services Department.

Two suspected members of the drug trafficking syndicate and four other associates were also arrested in the ICAC operation on Tuesday.