A drug dealer weighing hashish at his shop.

A drug addict rubbing hash on his palm before mixing it with tobacco.

An addict warming hash under a lit match before mixing it with tobacco and filling it into a cigarette.

A drug addict filling hash and tobacco into a cigarette.

An addict smoking hashish.

An addict (L) injects heroin next to another addict at Ibrahim Hyderi Fish Harbour on the outskirts of Karachi.

A drug addict passes a cigarette to another addict as they rest in a room of the Hope Rehabilitation Centre in Karachi.

An addict helps inject heroin into another addict along a street.

A woman sniffs heroin with the help of a paper tube at her home in the Ibrahim Hyderi Fish Harbour area.

A Coast Guard soldier stands guard near a burning pile of confiscated heroin, hashish and bags of betel nuts during a campaign to mark the International Day against Drug Abuse and Illicit Trafficking, on the outskirts of Karachi in this June 26, 2012 file photo.