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.

Pakistan’s police on Monday fired tear-gas shells and used baton charges as thousands of supporters of jailed former prime minister Imran Khan tried to storm the capital at protest seeking his release.

Pakistan has put the capital Islamabad under lockdown as thousands of supporters of jailed former prime minister Imran Khan marched towards the city to demand his release, in the latest threat to the legitimacy of the military-backed government.