At least two policemen and two militants were killed in a clash triggered by an attack on a New Kabul Bank branch in the capital of eastern Kunar province of Afghanistan on Tuesday, said officials.The Police Chief, Brig. Gen. Abdul Habib Syedkhel said in a statement that two attackers forced their way into the building and opened fire killing two policemen and injuring three bank employees. The security men retaliated theattack and killed two militants, claimed officials.The officials confirmed that all staffers of the bank took shelter in a safe room and no one had suffered casualties. The dead and injured were shifted to the Asadabad Civil Hospital.