London: The Muttahida Qaumi Movement (MQM) senior leader Muhammad Anwar had been arrested by the Metropolitan police in London.
The Metropolitan Police had earlier announced the arrest of a 64-year-old man from northwest London on suspicion of money laundering.
The Muttahida Qaumi Movement also confirmed was arrested from a residential address in northwest London.
The Counter Terrorism Command officer were also carrying out a search at the Northwest London address, they said.
Police in London does not name suspects in ongoing investigations until charges are framed.
But the MQM confirmed to Geo News that the 64-year-old man arrested was senior leader Muhammad Anwar, who is one of the senior most members of the party and a member of its central coordination committee.
“Muhammad Anwar was arrested at 9:00 am this morning. He is currently at the Central London police station, where a team of lawyers is present with him for legal support,” MQM leader Haider Abbas Rizvi told Geo News.
The MQM said that it respects British laws, and would cooperate with the police as they have done in the past.
London police said that five other people had previously been arrested in connection with the same investigation, and that they currently remain on bail.
Those previously arrested in the probe include two suspects aged 73 and 44, who were arrested on Dec 5 2013 and later released on bail.
Another 61-year-old suspect was arrested on June 3 2014, and also remains on bail.
Met police said a fourth 41-year-old suspect voluntarily attended a police interrogation by appointment on Jan 12 in Greater Manchester, where he was arrested but later released on bail.
A fifth 27-year-old suspect attended a Suffolk police station interrogation, where he was arrested on suspicion of money laundering but later released on police bail to a date in April, they said.