In a shocking development, Deputy Speaker of Pakistan Qasim Suri Sunday ruled that the no-trust motion against Prime Minister Imran Khan is unconstitutional and can not be voted upon.

The ruling from the deputy speaker came after Law Minister Fawad Chauhdry's statement in the National Assembly that the attempt by the Opposition to topple the PTI government is backed by a foreign power and against the Constitution, reports the News International.

Shortly after, Imran Khan, in an address to the nation, said he had advised President Arif Alvi to dissolve assemblies.

Earlier, the district administration of Islamabad -- the capital of Pakistan -- has imposed Section 144 to avoid any untoward incidents ahead of the crucial parliament session to vote on a no-confidence motion against Prime Minister Imran Khan.

The city's deputy commissioner issued a statement recently stating that the Red Zone (the place where govt and military buildings are located) has been sealed with big containers and barbed wires and with tightened security, reports Pakistan media.

Authorities have prohibited all kinds of gatherings in areas in and outside the Red Zone within a 1km radius and also completely banned pillion riding in the city for Sunday (4 April).

A notification issued by Islamabad's district magistrate prohibited 'all kinds of gatherings of five or more persons, processions/rallies and demonstrations inside the Red Zone.