Pakistan left-arm fast bowler Wahab Riaz has become the fourth Pakistan cricketer to be questioned about the ongoing spot-fixing allegations.
Mohammad Amir, Mohammad Asif and Salman Butt have already been questioned by police and have since returned to Pakistan, from where they have been granted additional time to respond to International Cricket Council (ICC) charges under its Anti-Corruption code.
"Wahab Riaz of the Pakistan Cricket Team has today voluntarily attended Kilburn Police Station to provide assistance in the ongoing investigation concerning allegations published by the News of the World," a statement from Addleshaw Goddard, the legal firm representing the players read.
"He has been unconditionally released. We can also confirm that Mohammad Amir, Mohammad Asif and Salman Butt have written to the ICC indicating their intention to defend themselves in respect of the disciplinary action brought against them.
"The players have expressed concern that the ICC's investigation could prejudice the police investigation, and have requested additional time to respond fully to the charges. The ICC has granted additional time. The players remain willing to co-operate in full with the ICC. No further comment will be made at this time."
© Cricket World 2010