Few details are available yet but AP reports that a CV-22 Osprey went down about 7 miles from Qalat, the capital of Zabul province. Four are dead, three servicemembers and one government contractor.
CV-22s are an Air Force special operations asset. We're trying to get more details and will present them when we get them.
According to the AP, the Taliban had "claimed militants shot down the aircraft, part of a pattern of the insurgents making such claims to promote their cause of driving foreign forces from the country."