Human error led to deadly U.S. strike on Afghan hospital - military

The staff of Medecins Sans Frontieres (MSF), also known as Doctors Without Borders, demonstrates in Geneva, Switzerland November 3, 2015, one month after the U.S. bombing of their charity-run hospital in Kunduz in Afghanistan. REUTERS/Denis Balibouse

WASHINGTON (Reuters) - A U.S. investigation found that the deadly Oct. 3 air strike in Afghanistan that destroyed a hospital run by Medecins Sans Frontieres was a tragic and avoidable accident caused primarily by human error, a top U.S. military commander said on Wednesday.

Some U.S. personnel were suspended and could face disciplinary action after failing to follow U.S. rules of engagement in a war zone, said U.S. Army General John Campbell, who leads international forces in Afghanistan.