The U.S. military is reviewing claims that one of its airstrikes killed people after it hit a residential building in Afghanistan, NBC News reported.
A local lawmaker told The Associated Press that 13 civilians were killed. NBC News could not independently confirm that account.
American officials confirmed in an email to NBC News that one strike was carried out in the Achin district of Nangarhar province and that they were "aware of some claims of Afghan casualties."
Local lawmaker Esmatullah Shinwari told the AP that an airstrike in Achin had hit a residential building where a crowd had gathered to welcome home a tribal leader returning from the Hajj, an annual Muslim pilgrimage to Saudi Arabia.