The United States is investigating reports of civilian casualties in Kabul after a U.S. drone strike blew up a vehicle carrying “multiple suicide bombers” from the ISIS-K terrorist group on Sunday, an official said. The U.S.-led counter-terrorism drone attack may have caused “additional casualties” as well as the two Islamic State militants it targeted, Captain Bill Urban, a Central Command (CENTCOM) spokesperson, said in a statement late on Sunday. “We are aware of reports of civilian casualties following our strike on a vehicle in Kabul,” said Urban. The reports are being looked into by the United States, Urban said, noting that while the drone strike disrupted an imminent ISIS-K threat to Kabul’s international airport, “We would be deeply saddened by any potential loss of innocent life.” “We know that there were substantial and powerful subsequent explosions resulting from the destruction of the vehicle, indicating a large amount of explosive material …