Man held in politician murder probe
Detectives investigating the death of Pakistani politician Imran Farooq are questioning a man on suspicion of murder.
Scotland Yard said the 34-year-old suspect was arrested at a home in Camden, north London.
A spokesman said he is also being questioned on suspicion of robbery a month after the murder in Edgware, central London.
Dr Farooq, 50, died from stab wounds and head injuries after an ambush outside his home in Green Lane as he returned home from work on Thursday September 16.
The politician, a prominent member of the MQM (Muttahida Quami Movement) party, was living in exile after fleeing his homeland 11 years ago.
Investigators are hunting two men of Asian appearance seen in the area of the murder and have released an e-fit of one of them.
They have recovered a kitchen knife and a brick used in the attack.
Detectives from Scotland Yard's counter-terrorism command took responsibility for the murder inquiry because of fears it may be politically motivated.
Dr Farooq's widow Shumaila Imran, 42, said the death of the "dedicated family man" had left her and others in "shock and disbelief".
The murder sparked violent unrest in Karachi, with further clashes when Dr Farooq was buried in November.