Samajwadi Party on Saturday refused to comment on whether it had any discussions with Prime Minister Manmohan Singh on joining the government.

Party general secretary Amar Singh, who along with SP chief Mulayam Singh Yadav had met the PM earlier in the day, said, "it is not the right time to talk about such issues," when asked whether they had discussed the possibility of joining the government with PM.

He said that there was also no such indication from the UPA government, adding "that there was nothing unusual in our meeting with the PM. We met him formally for the first time after winning the confidence vote and congratulated him."

On being asked whether there were divisions within the party on the issue of joining the government, Singh said, "earlier there were reports that SP had broken when some MPs had rebelled, now the media says that there are factions within the party. There is too much speculation doing the rounds."

Reacting on the three BJP MPs filing complaints in relation with the cash-for-vote controversy, Singh lashed out at the party saying that he too had certain "explosive" proofs against BJP bigwigs.

"I also have certain sensitive and explosive proofs against BJP MPs. But I won't disclose them now, as making them public would put a blot on these public figures. I will submit these proofs to the Speaker at an appropriate time," the SP leader said.