southwestern iran was attacked. this video coming in to cnn just minutes ago. [ gunfire ] >> a governor there told local media that terrorists disguised themselves as islamic revolutionary guard members. a military spokesman says that the attackers were connected to a saudi arabian terror group. secretary of state mike pompeo has a warning for iran saying the country will be held accountable for any attacks on u.s. forces even by proxy forces. he sat down with cnn's elise labbot. >> we have told the islamic republic of iran that using a proxy force to attack an american interest will not prevent us from responding against the prime actor. >> reporter: a direct threat from the secretary of state against iran after a pair of rocket attacks hit u.s.