March demanding release of Pakistan's ex-PM Khan nears capital

A march by hundreds of supporters to demand the release of jailed former Prime Minister Imran Khan reached the fringes of Pakistan's capital of Islamabad on Monday, his party and officials said, amid reports of violence elsewhere.

Authorities have enforced a security lockdown for the last two days to block the protesters, whom Khan has called on to march on parliament for a sit-in demonstration, while highways into the city have been barricaded.

The government has used shipping containers to block major roads and streets in Islamabad, most of them patrolled by large contingents of police and paramilitary personnel in riot gear.

Officials and witnesses said all public transport between cities and terminals has also been shut down in the eastern province of Punjab to keep away the protesters, led by members of Khan's Pakistan Tehreek-e-Insaf (PTI) party.

"We wouldn't let them storm the capital," said provincial Information Minister Uzma Bukhari, adding that about 80 of Khan's supporters had been arrested.

Several police officials were injured in clashes and rioting at some places in the province, she told a news conference.

The capital added an extra layer of security ahead of a visit by the president of Belarus, Aleksandr Lukashenko, set to arrive on Monday.

Khan's party accused the government of using violent tactics to block the protesters, saying it had arrested hundreds of workers and leaders.

The military has an outsized role in politics, and mostly decides who will rule the South Asian nation of 241 million.