All are in "legal limbo" and could still face the military tribunals which are the main sticking point in negotiations between British and US authorities. Begg's father Azmat said today: "I do not know why my son has not been released. I am hopeful that he will be released after a while." Mr Begg added that, after six months with no news, he was very worried about his son's health because of the conditions he had been kept in.