Pakistan's ousted Prime Minister Imran Khan disbanded a protest march by supporters on Thursday (May 26) after clashes with police outside parliament the previous evening, but he warned that they would return unless an election was called within six days.

Khan has said that the confidence vote that toppled him and ushered in the coalition government led by Prime Minister Shabhaz Sharif last month was the result of a U.S. conspiracy, and he is demanding a fresh election to show he has national support.

"I'm giving you six days. You announce elections in six days," Khan said from atop a truck after he and thousands of his supporters reached Islamabad, adding that the parliament should be dissolved to hold fresh elections in June.

He warned the government that he will march on the capital again if it didn't meet his demands.