The incumbent Prime Minister shall continue to hold office till appointment of the caretaker premier, the notification said
President Alvi had dissolved the National Assembly (NA) on the advice of Prime Minister Khan, minutes after Deputy Speaker Qasim Suri rejected a no-confidence motion against the premier
His statement comes as opposition cried foul after the government dissolved assemblies and called early elections
Khan revealed that the US had sent a threatening message through Pakistan's envoy.
The United States has rejected Imran Khan's allegations regarding Washington's role in the alleged "foreign conspiracy" to oust him from power.
The nuclear-armed nation of more than 220 million people lies between Afghanistan to the west, China to the northeast and nuclear rival India to the east, making it of vital strategic importance.
The official, speaking on the condition of anonymity, said the forces would likely be redirected towards eastern Ukraine, but it was still not confirmed
Pakistan's army said on Sunday it was not involved in politics, after the country was thrown into uncertainty when Prime Minister Imran Khan dodged an attempt to oust him and sought fresh elections.
Pakistan's army is 'absolutely not' involved in the current political situation, army spokesman Major General Babar Iftikhar told Geo News
In the run-up to the tabling of the no-confidence motion by the opposition, China has appealed to all the political parties to close ranks in the interest of stability and development.
Information Minister Fawad Chaudhry said that the Cabinet has been dissolved.
Prime Minister Khan, who had effectively lost majority in the 342-member National Assembly, made a brief address to the nation after a stormy parliament session was adjourned by Deputy Speaker Qasim S
Punjab province Governor, Chaudhry Muhamad Sarwar accepted the resignation of Chief Minister Usman Buzdar on Friday.
The 69-year-old cricketer-turned politician is facing the no-confidence motion, which was tabled by the Leader of the Opposition in the National Assembly Sharif on March 28.
A total of 10,000 security personnel have been deployed in Islamabad's red zone: Report
Live news updates: Opposition parties say cancellation of the no-confidence vote is illegal, accuse Khan of throwing the country into a constitutional crisis.
Terming it a "war for the future of the country, Khan said Pakistan was standing at a decisive point
Gen Bajwa highlighted the importance of keeping conflict away from the region, he said Pakistan wanted the Sino-India border to be resolved soon through diplomacy and dialogue as well, Dawn reported
Pakistani people, including political leaders, were surprised when PM Imran Khan praised his Indian counterpart Narendra Modi's foreign policy before a crowd of thousands of supporters
The US has "clearly distanced" itself from Pakistan, ex-American military chief Mike Mullen said as the White House and the State Department rejected claims of their involvement in Islamabad politics