Washington, Aug. 21, 2019, SPA -- The US Defense Department (Pentagon) announced in a statement today that a security team is investigating the Iranian-backed Houthi attack against a US drone over Yemen, while flying at high altitude in international airspace. Pentagon added that this action is a provocative act by Iran and its terrorist groups and poses a real threat to the stability of the region. The statement dislosed that the drone MQ-9 was shot down over the skies of Zamar province, south east of capital Sanaa. --SPA 20:43 LOCAL TIME 17:43 GMT 0020 www.spa.gov.sa/w1159260