The Delhi Police made the submission in an additional charge sheet filed before Special Judge Sangita Dhingra Sehgal, over a month after the court on October 15, directed it to "investigate from all angles" and trace the source of money in the case.
The court's order had come on a plea by BJP's Rajya Sabha MP Faggan Singh Kulaste, an accused in the case, seeking further probe in the matter to trace the source of money and the beneficiaries of the deal to pay the BJP's "vulnerable" MPs to vote in favour of the UPA government.
In the fresh charge sheet, the police gave details about its further probe during which Amar Singh was again quizzed and the editor-in-chief and the reporter of a TV news channel, which conducted the sting operation, too joined the investigation.
Police in its report further said that advertisements were published in newspapers in several cities to get information about an unidentified person, who had allegedly carried the currency notes delivered to politicians.
The police said Singh was interrogated again on November 14 to find out the money trail and to establish the identity of the person in yellow shirt. "However, no clue could be gathered during his interrogation," it said.
