Clashes are continuing in Pakistan between police and protesters demanding the resignation of PM Nawaz Sharif.

Police again fired tear gas as the demonstrators tried to regroup after a night of violence near Mr Sharif's residence in the capital, Islamabad.

Three people died during the clashes and more than 400 were injured.

Demonstrators loyal to opposition politician Imran Khan and cleric Tahirul Qadri have been taking part in a sit-in for two weeks.

They want Mr Sharif to resign, alleging corruption and electoral fraud. The prime minister denies the accusation.