4 security forces killed as ex-PM Khan supporters flood Pakistan capital

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. Convoys of pro-Khan demonstrators have been marching on Islamabad since Sunday, hauling aside roadblocks and skirmishing with police and paramilitary forces firing volleys of rubber bullets and tear gas.