Kathmandu: Nepal's main opposition party on Monday accused the ruling Maoists of not being sincere in implementing past deals to push forward the 2006 peace process which has been stalled due to political deadlock.

Prakash Man Singh, the General Secretary of the Nepali Congress, asked the UCPN-Maoist to be honest in implementing all past agreements and understandings reached in connection with the peace process.

The Maoists are not showing sincerity in implementing the 7-point agreement reached among the major political parties four months ago, he said.

The agreement includes expediting the peace process, returning the property seized by the former rebels during the decade-long insurgency and dismantling the Young Communist League (YCL), the paramilitary youth wing of the Maoists.

He blamed the Maoists for unnecessary delays in the peace process and the constitution drafting process.

Singh warned that the Nepali Congress could step up efforts for an alternative to the Bhattarai-led government if the coalition did not make any progress in concluding the peace process.

His attack on the ruling party comes as Nepalese Prime Minister Baburam Bhattarai on Sunday voiced confidence that the country's new Constitution will be promulgated within the stipulated deadline of May 27.

Bhattarai had claimed that his UCPN-Maoist government has completed most of the tasks related to the peace process.

Integration of the Maoist combatants is a key element of the ongoing peace process. The major political parties including the UCPN-Maoist and Nepali Congress had inked a deal few months back to integrate 6,500 former Maoist combatants into Nepal Army as part of the peace process.

Nepal's peace process has been stalled due to crucial disagreement among the parties over key issues of federal structure and the form of government in the country.