LONDON - The British police, investigating the murder of Pakistani politician Dr Imran Farooq in 2010, said Monday they had arrested a man in connection with the case after he arrived in London on a flight from Canada.

Counter-terrorism detectives arrested the 52-year-old man at Heathrow Airport at 10:10am (0910 GMT) and took him to a police station in London.

Farooq, 50, a founding member of Muttahida Qaumi Movement (MQM), was stabbed and beaten to death in London as he returned home from work in September 2010.

Earlier, the police searched two residential properties in London this month as part of the investigation. The police have offered a reward of £20,000 for information that helps lead to a prosecution.

According to the police, the attack would have required a careful planning and help from other people some of whom might have provided assistance or information unwittingly.

Monitoring adds: Reports said the arrested 52-year-old British citizen of Pakistani origin is Iftikhar Hussain and is linked to a storng man.

The detectives lay in waiting for the man whose travel trail was being monitored for a long time. The detectives were interviewing him on Monday at a West London police station where he was in custody.

Dr Farooq was on his way home from work when he was attacked in Green Lane, Edgware, by a group of Pakistani men who killed him, using a kitchen knife and bricks. A postmortem gave his cause of death as multiple stab wounds and blunt trauma to the head.

A five-and-a-half-inch-bladed kitchen knife and a house brick used in the attack were recovered from the scene. The police said they were interested in speaking to anyone who was asked for information about Dr Farooq and his routine, or who was asked to help buy items such as knives similar to those used in the murder.