Aid workers killed in Afghan hospital bombing

Doctors Without Borders (MSF) says three of its staff were killed in an overnight bombing of a hospital in the embattled Afghan city of Kunduz.

NATO said a US air strike "may have" hit the hospital, which is run by the medical charity, adding that the attack may have resulted in collateral damage.

The MSF hospital is seen as a key medical lifeline in the region, which has been running "beyond capacity" in recent days of fighting which saw the Taliban seize control of the provincial capital for several days.

At the time of the bombing, 105 patients and their caretakers and more than 80 MSF international and national staff were present in the hospital, the charity said.

The MSF trauma centre in Kunduz is the only medical facility in the region that can deal with major injuries.

The development came a day after the Afghan government claimed it had successfully retaken parts of Kunduz from Taliban fighters who had controlled the strategic city since Monday.