Police chief says a military attack on notorious slum is imminent . Residents trapped in the crossfire and unable to go to their jobs have waved white flags outside their homes asking drug gangs to spare them , as criminals spray police with semi-automatic weapon fire and military artillery . ` ` Whoever wants to turn himself in , do it now , '' he says . Civilians are caught in the crossfire . The attack is a response by drug gangs to an increased military presence in slums .
Police chief says a military attack on notorious slum is imminent . ` ` Whoever wants to turn himself in , do it now , '' he says . Civilians are caught in the crossfire . The attack is a response by drug gangs to an increased military presence in slums .