Imran Bhai, there are two things:-
1) News says Militants, so there is no question of guessing weather they were or not...Look all of Pakistani media is saying they were militants, then we have to believe they really were militants and there would be many many more like them out there. So no...
It says " Drone attack kills FOUR MILLITANTS in Miranshah"
If Militants were killed, so why people complain??
If they were not terrorists, then their names along with fathers name and address should be published to tell the world that, look innocents are being killed.