Pakistan Tehreek-e-Insaf (PTI) Chairman Imran Khan said that a freedom struggle against "foreign conspiracy of regime change" begins today, a statement that comes after he was ousted from premiership through a no-confidence vote in the early hours of Sunday.

"It is always the people of the country who defend their sovereignty & democracy," Khan said in a tweet on Sunday.

The high drama that had gripped the country for the last few weeks ended an hour past midnight on Sunday as the opposition’s no-trust motion against Imran succeeded with 174 members in a 342-member strong house voting in favour of the motion.

Before the passing of the no-trust motion against him, Khan said he would not recognize any opposition government that replaced him.

"I will not accept an imported government," Khan had said in an address to the nation earlier this week, suggesting the move to oust him was part of a foreign conspiracy.

"I'm ready for a struggle."

Khan, who opposed the U.S.-led intervention in Afghanistan, has accused the United States of supporting a plot to oust him. Washington has dismissed the accusation.