New Delhi, Sep 2 (IANS): The Supreme Court Friday asked Delhi Police to focus on the source of the cash that was displayed by BJP members in the Lok Sabha during the 2008 vote of confidence and is better known as the cash-for-vote scam.

The apex court bench of Justice Aftab Alam and Justice R.M. Lodha gave the direction after the police submitted their status report on the probe. The apex court was told that the charge sheet in the case has already been filed.

While disposing of the public interest litigation by former chief election commissioner J.M. Lyngdoh, the court gave Delhi Police four weeks time to complete the probe.

Delhi Police had in August filed a charge sheet against Rajya Sabha member and former Samajwadi Party general secretary Amar Singh, senior BJP leader L.K.Advani's former close aide Sudheendra Kulkarni and two former members of parliament belonging to the BJP.

Counsel for Lyngdoh, however, expressed dissatisfaction with the probe report and said that it did not mention the actual beneficiaries of the scam and the money trail. To this, the court said that everything will be clear from the charge sheet.

When counsel sought directions from the court, Justice Lodha said the matter was before the trial court and if it felt that further investigation was required, then it could direct likewise. "The (trial) court could always direct for further investigation," Justice Lodha said.

When counsel pressed his point, Justice Alam said: "If anything (intervention of the court) is required we are always there."