He said after Parliament passed a resolution in favour of a strong lokpal bill, the Prime Minister had forwarded a written assurance that "our requirements" would be taken care of.
"Two years have elapsed. Where is the promise that the PM made? Should we still believe him?" Hazare asked.
"This is an act of betrayal on the part of the government, which is refusing to fulfil its promise to the nation," said the noted Gandhian, who made a brief halt in the city while on his way to Rewa, Madhya Pradesh.
Referring to the split in his team that started the campaign for the lokpal bill, Hazare said, "The movement still has the same impetus and energy despite some of my colleagues launching political parties of their own."
He appealed to voters to choose a corruption-free government and not be swayed by rosy promises of politicians and political parties.
Hazare's 12-day fast in August 2011 had received international attention.
(With inputs from PTI)