New Delhi: Rajya Sabha member Amar Singh was on Friday questioned by Delhi police in connection with the 2008 `cash-for-vote` scam.
The former Samajwadi Party leader was grilled for three-and-a-half hours at the Crime Branch office after two arrested accused Sanjeev Saxena and Suhail Hindustani named him, police sources said.
The sources said he denied his involvement in the scam.
Singh, who is accused of sending bribe money to win over three BJP MPs during the 2008 Confidence Motion, did not speak to the waiting media persons.
Police did not rule out the possibility of Singh being questioned again and it could take place after a status report is filed in the Supreme court next Friday.
BJP MP Ashok Argal, who was allegedly sought to be bribed, is expected to be questioned on Monday.
Amar Singh`s appearance before the police comes after the Delhi Police issued summons to him under Section 160 of the Criminal Procedure Code, asking him to present himself before the Crime branch.
He drove to the Crime branch`s Inter-State Cell in Chanakyapuri at 10.45 am in his Mercedes car.
The decision to call Singh for questioning comes after the arrest of Suhail Hindustani, who allegedly acted as a liaison between Singh and BJP MPs.
On Sunday, police had arrested Sanjeev Saxena, once considered close to Singh who allegedly delivered cash to the MPs to vote in favour of the UPA during the trust vote.
The arrests and fresh investigations into the case have come after Delhi Police was slammed by the Supreme Court last week for its "callous" approach in this case.