The death of Dr Imran Farooq, a senior politician, ex-parliamentarian, and former convenor of the MQM, in London, is indeed a moment of grief and sorrow for the nation. However, the murder poses serious questions for both the British and Pakistan governments, as well as for Scotland Yard. There are five possible clues to the mystery of the murder. It could be an inside job; an outside job by outsourcing and/or outer enemy; a job in the knowledge of the local intelligence community; a job by overseas agents or government; or s simple murder. Although these theories are purely speculative and no direct inference must be drawn for criminal investigation, I will deal with each one individually. First, besides being influential Dr Farooq was a potential danger for the MQM, especially since he had differences with its mainstream leaders. This would certainly interest the foreign governments and also the local intelligence community. He could perhaps create problems for the party by sharing valuable information about it and its members with the Pakistan government or foreign agencies. Second, it is a possibility that his murder may be carried out by the people who came from outside without a profile, not in the knowledge of the local intelligence community. Target killing by hired assassins cannot be ruled out, keeping in mind the style generally adopted for such purposes in Karachi. Similarly, there is a possibility that Dr Farooq was killed by outsourcing and we may get details of the killers soon, but may not be able to reach the masterminds without the joint intelligence cooperation of both the UK and Pakistan security agencies, though, in principle, the case throws a clear challenge to the British intelligence community. Third, there is a possibility that due to Dr Farooqs influence, he was on talking terms with some overseas elements. The information might be in the knowledge of those who matter. This must be seen in the light of forthcoming by-elections in Karachi, post-Ali Rezas murder; hence the happening. It is in the wider interest of the British government that the status quo in Karachi and the current leadership remains intact, safe and in the driving seat; anything disturbing that equilibrium may not be in the interest of some. Fourth, the Pakistan government was in constant communication with the leadership of PML-Q, thus weakening PML-N, while keeping the Punjab government under the tabs. It is possible that similar efforts may have been under consideration, or even in process, to threaten the present leadership in Sindh by weakening the existing majority. In case this information is shared with or perhaps leaked, it maybe a cause of concern for some; hence, the problems we are witnessing today. One thing is really surprising, that if it is so how the UK intelligence infrastructure was totally blank of this kind of activity. But, if it is a political murder, either the UK intelligence community knew something or if they did not know anything, then that is a high-tech failure and a blunder post-2006 poisoning of the Russian dissident Alexander Litvinenko from which they must have learnt something. Finally, it could be a simple murder by someone in a normal murder routine circumstances where the possibility of catching a killer maybe higher in Britain, due to a strong infrastructure of forensic evidence, availability of CCTV footage and hidden cameras, an enormous amount of data available of the calls received and made, and above all, unity of command and impartiality in criminal enquiry with resources at hand of the local police and specialised force. Several critics had warned, as did Imran Khan since 2007, that by allowing exiled firebrands to continue politics of intolerance, Britain is allowing a selective group to preach violence, ethnic and racial hatred overseas, which may be counterproductive, and in return may breed violence even in a peaceful city like London. The Pakistan government must demand parity from the British Home Secretary to ensure a fair investigation in order to trace the perpetrators of this crime and open wider investigation to rule out all possibilities of target killing. That will ruin the image of Pakistan in the UK. Also, overseas outsourcing must be checked, if both Britain and Pakistan are truly interested in solving the mystery, as to who actually killed Dr Farooq. Unless and until a credible investigation is conducted and the perpetrators are caught, the conspiracy theories will continue circulating, leading to or descending into a blame game. On the hindsight, it may not suit the MQM to have a fair investigation of Dr Farooqs murder case, as conspiracy theory might aid them more politically, if the circumstances remain mysterious in Karachi; it will indeed give them dividend. The May 12th massacre, the burning of six lawyers in their chamber on April 9, and series of target killings in 2010, in Karachi, are a prime example in which many got killed uncounted, and unaccounted. The culprits have not been identified. Therefore, it is very important that the British government should share all the findings with the Government of Pakistan. In addition, if the MQM has any information or clue to Dr Farooqs killers, it should have no reservation in sharing it with the local authorities, if they are really interested in catching the actual killers, in fact not only the killers, but also the masterminds of this heinous crime. As a final word, if not checked by the British government, God forbid, Londonistan might soon turn into 'Karachi and all because of allowing exiles to continue their politics of origin, violence, and ethnicity abroad. More so, it is time for the Pakistani politicians to decide whether they wish to remain in Britain peacefully, or they are interested in doing politics in the country of origin. In case they are, they must be ready to return soon as the end game has come for the British government to stop this hatred from multiplying and end the concept of safe havens in the name of protection from so-called apartheid and dictatorships. The writer is a barrister and chairs the Association of Pakistani Lawyers (UK).