Pakistan's capital, Islamabad, is under lockdown for a second day as thousands of protesters demanding the release of former prime minister Imran Khan from jail converge on the city. His supporters are also calling for the overturning of election results they say were rigged - a claim disputed by the government.

Protests in Pakistan turned violent this week as one police officer was killed and dozens of other people were injured. Pakistani police on Monday used tear gas to disperse supporters of jailed former Prime Minister Imran Khan as they attempted to enter the capital for a planned sit-in demanding his release, according to officials.