At least six people have died in protest-related violence as supporters seeking Imran Khan’s release from prison broke through barriers meant to lock down Islamabad.

Thousands of opposition protesters have converged on Pakistan's heavily-barricaded capital, demanding the release of jailed former prime minister Imran Khan.

Protesters demanding the release of Pakistan’s jailed former premier Imran Khan reached the edge of the nation’s capital, authorities said late Monday night, overcoming efforts by Prime Minister Shehbaz Sharif ‘s government to stifle the nationwide protests.