Claiming that CBI has become a "political tool", SP General Secretary Amar Singh said he will make a big disclosure in the next few days to "expose" the country's premier investigating agency.

"The CBI has become a political tool and is no longer autonomous. It has become Congress Bureau of Investigation. I will be making a big disclosure in the next two-three days which will expose the wrong doings of the CBI," Singh told reporters in Lucknow.

He said that the manner in which the agency gave a clean chit to Congress leader Jagdish Tytler ahead of the Lok Sabha elections raised doubts.

"The manner in which a clean chit was given to Tytler before the elections raise suspicion," he said.

On asked about the incident wherein a journalist of a Hindi daily hurled a shoe at Home Minister P Chidambaram during a press conference in Delhi, he said that it was worth condemning.

"But Muslims and Sikhs will never forgive the Congress for demolition of Babri Mosque and operation blue star at Golden temple," he said.