Kathmandu, Aug 3 - Nepal's former guerrilla party, the Unified Communist Party of Nepal (Maoist), Monday warned that if new Prime Minister Madhav Kumar Nepal did not dissolve his coalition government within 72 hours and make way for a Maoist-led national government, it would start a new protest movement both from the street and parliament.

'The current government is unconstitutional and illegal,' said Maoist leader and former finance minister Baburam Bhattarai, who along with two more senior party leaders will head the new movement against the current government.

'This government was formed under the shadow of the military after the president (Ram Baran Yadav) took the unconstitutional step of reinstating the chief of the army (who was sacked by the earlier Maoist government),' Bhattarai told IANS.

'We gave the Nepal government a month's time to establish civil supremacy over the military. If our demand is not met within that, we will start a new opposition movement.'

The deadline ends Wednesday.

Bhattarai, whose party became Nepal's biggest party after it ended its armed insurrection and took part in a historic election last year, spelled out what the Maoists meant by the restoration of civil supremacy.

'It means the current unconstitutional government has to be dissolved at the earliest and a national government formed under the Maoists,' Bhattarai said.