Authorities have reopened roads linking Pakistan’s capital with the rest of the country, ending a four-day lockdown, after using tear gas and firing into the air to disperse supporters of imprisoned former Prime Minister Imran Khan who demanded his release from prison.

A PTI leader has told BBC Urdu that Imran Khan's supporters are on Faisal Avenue, about six kilometres away from D Chowk. D Chowk is a key point in central Islamabad near government buildings, the Supreme Court and parliament.

Pakistan's capital Islamabad was gripped by violence on Tuesday as protesters demanding the release of former Prime Minister Imran Khan clashed with security forces near the parliament.