For your information Fox News never reported that. It is just what Colonel David Hunt (I think it is him) believes.
It was not Col. Hunt but rather Lt. Gen. Tom McInerney who proposed the Pakistan theory on Fox News.
As a news organization, Fox, CNN, MSNBC et al. have a responsibility not to give air time to every person who has a crackpot theory about what happened to the plane and passengers.
By airing such conspiracy theories, they become more credible than Alex Jones.