New Delhi, Sep 30 (PTI): The city police on Friday submitted to a Delhi court a supplementary chargesheet in the 2008 cash-for-vote scam which deals with its efforts to trace the source of money allegedly paid to the three erstwhile BJP MPs to get their votes in favour of the Congress-led UPA-I government's trust motion.

Public prosecutor Rajiv Mohan submitted to the court that that though they have completed their investigations in some aspects of the case, their overall probe into the scam is not yet complete.

He said the police is still awaiting Lok Sabha Speaker's sanction to prosecute BJP MP Ashok Argal.

The supplementary chargesheet was filed in the court of Special Judge Sangita Dhingra Sehgal by the Crime Branch of Delhi Police.

It contains no new names as the accused and is in continuation with the investigations carried out earlier before filing the first chargesheet on August 24, the prosecutor said.

He added the supplementary chargesheet also contains bank statements of some of the accused as annexures.

The Delhi Police had, in its first chargesheet, accused Samajwadi Party leader Amar Singh and L K Advani's former aide Sudheendra Kulkarni of "conspiring" and "masterminding" the cast-for-vote scam to bribe some MPs ahead of a confidence vote in Lok Sabha in 2008.

It had also named two former BJP MPs Faggan Singh Kulaste and Mahabir Singh Bhagora along with Sanjeev Saxena, former aide of Amar Singh and Suhail Hindustani, alleged BJP activist, who are in judicial custody.