Sarfaraz Merchant was summoned at London police station on Wednesday, a day after the MQM chief was grilled for five hours at the same police station in the same case.
After hours of questioning, Merchant's bail was extended till July 2015.
Read: Money-laundering case: After five-hour grilling, Altaf gets extension in bail
Merchant, who is from Karachi and has businesses in both Karachi and Dubai, is said to be a close friend of the MQM chief.
Last year, Merchant’s house was intensely searched by the Scotland Yard as his name is prominently mentioned in the money laundering case in London registered against Altaf Hussain.
He was interrogated for hours but was later released on bail.
COMMENTS
Comments are moderated and generally will be posted if they are on-topic and not abusive.
For more information, please see our Comments FAQ