The United States still is trying to determine what caused Saturday’s destruction and deaths at the Doctors Without Borders hospital in the northern Afghan city of Kunduz, U.S. Defense Secretary Ash Carter said. “While we are still trying to determine exactly what happened, I want to extend my thoughts and prayers to everyone affected. A full investigation into the tragic incident is underway in coordination with the Afghan government,” Carter said.

“The area has been the scene of intense fighting the last few days. U.S. forces in support of Afghan security forces were operating nearby, as were Taliban fighters,” Carter said. Aerial bombardments hit a Doctors Without Borders hospital in the battleground Afghan city of Kunduz early Saturday, killing at least 16 people, including nine staffers and seven patients, the charity said. Three of those patients were children. The circumstances weren’t immediately clear, but the U.S. military conducted an airstrike in Kunduz at the time, and the incident is being investigated, U.S. Army Col. Brian Tibus said. CONTINUE