British police have arrested a man in connection with the murder of exiled Pakistani politician Imran Farooq three years ago.
Police said on June 24 that they had arrested the man at Heathrow Airport on suspicion of conspiracy to commit murder.
Police did not name the 52-year-old man but said he was detained as he arrived on a flight from Canada.
The man, a British citizen of Pakistani origin, was taken to a West London police station.
Farooq, 50, was killed outside his home in north London in September 2010.
He was a former lawmaker of Pakistan's Muttahida Qaumi Movement (MQM), whose leader Altaf Hussain heads the party remotely from exile in Britain.
He is accused of murders in Pakistan.
The MQM maintains a strong support base in Karachi.
Based on reporting by Reuters and BBC Urdu