In case of Muslim Khan & that other commander, they were captured one week before being disclosed to the media, reason is that to get as much info possible so that the news of their capture does not let the other commanders & leaders run away & shift to new hideouts. So if Fazllullah is captured, he will be interrogated to the full extent as he would be having info to the location of nearly all of his commanders, and army can target them or capture them.
If the chronology of the recent past after the capture of Muslim Khan be seen, we have captured one more 10 million valued commander, plus one more major area commander got captured, plus the hot news of Fazlluallah also started in circulation.
So, i hope time will tell, but he may be in custody & getting interrogated.