Mr Altaf Hussain (left) - Violence in Karachi (right) - Photo BBC
In what was being seen as a showdown any day, yesterday was that day when a battalion of London Metro police barged into the house of a self-exiled political leader from Pakistan and head of one of the biggest political parties Altaf Hussain and took him into custody for interrogation.
Mr Altaf, living in London since 1991 has been held on suspicion of money-laundering.
His arrest has sparked widespread violence in Karachi, the port city of Pakistan and main supporting centre of the MQM, which controls Karachi. However, his party has urged supporters to stay calm amid outbreaks of violence there.