After acrimonious meetings, the last two meetings were cordial and both sides "agreed to disagree".
Law Minister M Veerappa Moily said the mandate of the committee was to prepare a Lokpal Bill and not to rewrite Constitution.
While government claimed that discussions with civil society have helped to bring out a "strong and robust" bill, the Hazare camp expressed "deep disappointment" with the government draft.
"The government has no intention to bring a strong Lokpal Bill. It is misleading the people. Now, there is no option but to go on fast from August 16 as announced earlier," Hazare told reporters after the meeting.
"People will teach them (government) a lesson," he said adding his agitation will be against the government and not Parliament as contended by Union Minister Salman Khurshid.
The Hazare camp said major differences persisted with government rejecting all their major demands like inclusion of Prime Minister, higher judiciary, MPs'' acts inside Parliament under the ambit of Lokpal and procedure for selection and removal of the ombudsman.
The various proposals in the government draft include powers to take suo motu cognizance of act of corruption, powers to investigate cases against officials above Joint Secretary rank, recommend transfer and suspension during the course of probe and provision for time-bound trial by special courts.
The government draft does away with provision for securing sanction for prosecuting a public servant.
