The Afghan special counter-narcotic police have detained 13 persons for alleged drug trafficking in five of the country’s 34 provinces within a week, authorities said on Wednesday.

“Counter-Narcotics Police of Afghanistan (CNPA) have cracked 10 major drug-trafficking cases.

“CNPA also captured 13 drug dealers involved in the cases in Kabul, Herat, Nimroz, Kandahar and Laghman provinces within the last one week,’’ the Counter-Narcotics Criminal Justice Task Force of Afghanistan (CJTF) said in a statement.

It noted the anti-drug police force also found drugs including 15 kg of heroin, over 530 kg of opium and 370 litre of chemical substance from the detainees.

It added that the CNPA also seized 11 vehicles, 16 mobile phones and 26 rounds of different types of bullets from the suspects.

"After initial investigation, the CNPA has handed over the cases to the , a special Afghan court for jurisdiction of major drug cases,’’ the statement said.

The vast majority of the world’s opium poppy, the raw element for making heroin, is cultivated in militancy-hit Afghanistan, particularly in the western and southern parts of the country, where government security forces have little presence.

According to the latest figures released by the Afghan Ministry of Counter-Narcotics, some 4,800 tons of opium has been produced this year in Afghanistan, home to some 1.9 million to 2.4 million adult drug addicts.