"Without discussing the merits of Narendra Modi, I sincerely believe that it will be disastrous for the country to have Modi as the PM," Manmohan Singh told the media here.

He added that he was fully confident that the next prime minister, after the Lok Sabha election, will also be from the Congress-led UPA coalition.

Manmohan Singh also declared that he will step down after the next Lok Sabha election.

"In a few months time, after the general election, I will hand the baton over to a new prime minister," Manmohan Singh told the media.