charlie
in my strictly off the record professional opinion, if a suspected terrorist went missing and the DMLE had anything to do with it, a filed missing person's report would very quickly give you a clue. either they can locate him or her based on tracking magic or they can't. if they say they can't the ST is either out of the country or the DMLE is lying.
as to whether it's possible, I don't know. hypothetically, anything is possible. realistically, I don't think I want to accept that the DMLE is involved in missing persons.