Suspected U.S. airstrike accidentally kills nine Doctors Without Borders staff in Afghanistan

US forces were carrying out air strikes at the time. The Nato alliance has admitted the clinic may have been hit.

MSF says 37 people were seriously wounded in the attack, 19 of whom are its staff.

There has been intense fighting in Kunduz since Taliban fighters swept into the northern city on Monday.

It was the first major urban centre to fall to the Taliban in 14 years.