Thousands of supporters of Pakistan’s jailed former Prime Minister Imran Khan broke through barricades around the capital Tuesday and marched into Islamabad, clashing with security forces and demanding his release.

Residents of Islamabad are tiring of regular demonstrations demanding the release of the former prime minister Imran Khan, with the marches leading to clashes with security forces.

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.

The crackdown brought a swift end to the protests that have gripped Islamabad, Pakistan’s capital, this week ever since thousands of people gathered in the city to demand the release of Imran Khan, the former prime minister. Mr. Khan has been in prison since last August on charges that his party claims are politically motivated.

Protesters in support of Imran Khan’s PTI party were met with obstruction and violence, leading to mounting public outrage.