"After carefully considering all relevant and reasonably available information, which included a review of the Afghan government’s report of findings, our investigation found no credible information to corroborate the allegations," US Forces spokesman Lt. Col. Martin O’Donnell said in the release.
The US investigation began July 24, following allegations that US airstrikes in defense of Afghan forces during Afghan-led ground offensive operations the in Chahar Darah district, Kunduz province, had led to civilian casualties.
Media reports quoting area residents and local officials claimed a US airstrike had killed 14 members of a family.
READ MORE: US Airstrike Hits Afghan Security Forces, Not Taliban, Kills Friendly Troops
After the US combat operation in Afghanistan ended in 2014, US forces have remained in an advisory capacity to help train Afghan troops and provide assistance in counter-terrorism missions.