Pakistani security forces launched an operation Tuesday night to disperse supporters of imprisoned former prime minister Imran Khan who had gathered in the capital to demand his release from prison.

Pakistan's security forces conducted a midnight raid on supporters of jailed former Prime Minister Imran Khan after they stormed Islamabad, demanding his release. As per media reports, hundreds of people were arrested in the operation.

Pakistani protesters demanding the release of ex-prime minister Imran Khan on Tuesday killed four members of the nation's security forces, the government said, as the crowds defied police and closed in on the capital's centre.