Airport Security Force (ASF) officials on Friday detained a Nigerian passenger at Islamabad's Benazir Bhutto International Airport (BBIA) for allegedly possessing heroin, ASF sources told DawnNews.

The detained passenger, identified as Filpines, was leaving Pakistan on Istanbul-bound flight TK-711 when immigration officials searched his luggage and found 430 grams of heroin hidden in the pocket of a pair of dress pants, the sources said.

ASF officials detained the passenger on the spot. Filpines was handed over to the Anti-Narcotics Force for further investigation.

A First Information Report was registered against the foreigner and he will be produced at a local court in Rawalpindi tomorrow, the sources said.

Investigators are probing as to whom the Nigerian national had purchased the drugs from during his stay in Pakistan, the sources said, adding that his suspected involvement in the supply of drugs to students of educational institutions in the twin cities is being probed.

BBIA authorities have started checking all passengers after heroin was recovered from a Pakistan International Airlines plane last month.