The Supreme Court has asked the Delhi Police to trace the source of money used to allegedly bribe some parliamentarians ahead of a confidence vote in the Lok Sabha in 2008.

While asking the police to trace the source of the funds, a Bench of Justices Aftab Alam and R M Lodha, however, refused to monitor the case further, saying the chargesheet in what is known as the cash-for-vote scam has already been filed in the court.

Former Chief Election Commissioner J M Lyngdoh, on whose plea the apex court had issued a number of directions in the scam, pleaded that the matter should not be disposed of and the apex court keep the matter pending.

The Supreme Court has granted the Delhi Police four weeks to complete its investigation.