Kathmandu, Aug 4 - Nepal's former guerrilla party, the Maoists, Monday rejected a call by Prime Minister Madhav Kumar Nepal to call off the disruptive protest movement they have threatened to launch from Friday.

'We are rejecting the appeal as the government is not serious about our demand,' Maoist lawmaker and the party's deputy chief in parliament, Narayan Kaji Shrestha Prakash, told the media after a meeting of the 24 parliamentary parties to find an amicable solution ended without any agreement Monday.

The Maoists have announced they will obstruct parliament from Friday as part of their double-pronged protests.

Simultaneously, they will also hold mass meetings, take out torch rallies and have sit-ins.

From Aug 27, the protests will begin to target Nepal's first President Ram Baran Yadav, whom the Maoists blame for the fall of their eight-month government.

They have announced a boycott of all public programmes to be attended by the president as well as showing him black flags.

Subsequently, they have threatened to extend the same gesture to the prime minister and the council of ministers.