Ex-Pakistan Prime Minister Imran Khan supporters flood Pakistan capital, four security forces killed

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.Despite a ban on public gatherings, AFP journalists saw more than ten thousand protesters in the city centre on Tuesday afternoon. Some were armed with sticks and…