"Samajwadi Party is getting cases registered against ministers of the previous BSP government as part of a conspiracy," Siddiqui said at a party meeting here.
On the UP Lokayukta N K Mehrotra, on whose recommendations vigilance department had probed the case against him, Siddiqui said that his (Lokayukta) tenure had come to an end on March 15, 2012 "but the Akhilesh government had extended it by two years against the rule".
The state government had yesterday given nod to the vigilance department to file an FIR under the anti-corruption act against the BSP leader, in connection with charges of possessing assets disproportionate to his known sources of income.
Meanwhile, a youth threw a slipper towards Siddiqui in Azamgarh while he was addressing party's 'Muslim bhaichara sammelan' this afternoon.
The police personnel deployed at the venue somehow brought the youth out of the venue.
The BSP leader alleged that those involved in the act belonged to Samajwadi Party, who got perturbed after "seeing sizeable presence of Muslims in the BSP sammelan".