US President Barack Obama has apologised to medical charity Médecins sans Frontières (Doctors Without Borders) following the bombing of a hospital in Afghanistan, the White House said.
The air strike at the MSF-run hospital in Kunduz killed 22 people, including three children.
Medical charity Doctors Without Borders - or Medecins Sans Frontieres (MSF) - has withdrawn from of Kunduz following the bombing of its hospital in the northern Afghan city.
The deadly air strike on Saturday killed 19 people when it hit the medical facility.
Kate Stegeman, the group's communications manager, said some staff are still working in other health facilities in the city, where troops have been battling Taliban fighters.
The international charity tweeted a message of thanks on Twitter to those who had supported the group and sent messages of condolencesince the tragedy.
Investigations are continuing into the bombing of the hospital.
There could be a long wait for answers as to how and why Kunduz hospital ended up being on the receiving end of US air strikes.
Medical charity worker relates how he and colleagues tried to save patients and staff following devastating air strike.