Kabul:  President Hamid Karzai has demanded that the US detention centre at Bagram Air Base be handed over to Afghan control within a month, along with all Afghan citizens held by the coalition troops across the nation.

A Presidential statement on Thursday said keeping Afghan citizens imprisoned without trial violates the country's constitution, as well as international human rights conventions.

The prison, inside the sprawling US base at Bagram north of Kabul, abuts a well-known public detention centre known as Parwan, which is run jointly by Afghan authorities and the US military.

It's unclear how many high-value detainees are being held at the US facility. Human rights groups have claimed that detainees were menaced, forced to strip naked and kept in solitary confinement in windowless cells.

A statement from Karzai's office said he issued instructions to a commission consisting of the ministers of defence, interior and justice, as well as other top government and judicial officials, "to complete their job regarding the handing over of the (Bagram) prison and other prisoners who are held by foreign forces."

"The work should be completed within a month," it said.

The US-led NATO coalition is gradually handing over responsibility for security to the Afghan police and army. The process is due to be completed in 2014, when most foreign troops are scheduled to be withdrawn from Afghanistan.

Karzai's demands are the most recent in a series of exercises in political brinksmanship by the president, as he tries to bolster his negotiating position ahead of renewed talks for a Strategic Partnership Document with America that will determine the US role in Afghanistan after 2014.

Among the conditions that Karzai has set is an end to night raids by international troops and complete Afghan control over detainees.

Karzai is walking a tightrope. Although he routinely plays to anti-American sentiment in Afghanistan by denouncing the US, he needs America's military and financial strength to back his weak government as it battles the Taliban insurgency.

The CIA's infamous secret network of "black site" interrogation centres is now gone, but suspected terrorists in Afghanistan are being held and interrogated for weeks at temporary sites, including one run by elite special operations forces at Bagram Air Base.

The detainees include those suspected of top roles in the Taliban, al-Qaida or other militant groups.

Also on Thursday, three NATO service members were killed in an explosion in the south of the country, the coalition said.

(Agencies)