assasinations have been carried out in NWA by pro-goverment agents in the past, namely, on those who have exposed the Pakistani apparatus in the past. Since Khawaja was the only one out of the 3 who constantly kept checks on the state and made vocal protests, the first line of enquiry and obvious one is that he was murdered because of his dissent.
Good article on a brave journalist who suffered a similar fate.
BBC NEWS | South Asia | Pakistan probes journalist death
Good article on a brave journalist who suffered a similar fate.
BBC NEWS | South Asia | Pakistan probes journalist death