The Anti Narcotics Force (ANF) found heroin on a plane on the tarmac of Karachi Airport following a tip-off on Saturday.
Customs and police officers closed in after the PIA flight from Lahore landed. The passengers were taken off the plane while the authorities carried out a search.
PIA said that it's flight PK 303 will depart for Peshawar after the investigation is complete.
The police and customs were told that the alleged shipment would be smuggled off the plane at Karachi.
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