Afghan security forces stormed a bank branch besieged by insurgents in Helmand province Wednesday , ending a deadly attack , police said . Five civilians , one police officer and two army soldiers were killed , said Farid Ahmad Obaid , a spokesman for the police chief of southern Helmand province . Fourteen others , nine civilians among them , were wounded , Obaid said . He warned that the death toll could go up since at least one of those injured was in critical condition . The Taliban claimed responsibility for the attack on the Kabul Bank office in the provincial capital of Lashkar Gah . Taliban spokesman Qari Yousuf Ahmadi said via Twitter that the target was Afghan security forces personnel who were visiting the bank to receive their monthly salary . All the attackers were killed in the operation to end the siege , Obaid said . The four armed insurgents attacked shortly before noon , he said . The first attacker , who was riding a motorbike , blew himself up outside the bank branch , while three others stormed inside the building , he said . Obaid said the gunbattle between the Afghan security forces and the assailants lasted about 90 minutes before the militants were killed . Meanwhile , a suspected drone strike Tuesday killed 11 Taliban in Afghanistan 's eastern Nangarhar province , near the border with Pakistan , a local Afghan government official told CNN on Wednesday . Among those killed in the strike in Sherzad district were four Pakistanis and two midlevel Afghan Taliban officials , said Malem Mashuq , the district chief . It 's not clear if the strike was linked to Tuesday 's shocking attack by the Pakistan Taliban on an army-run school in Peshawar , northwestern Pakistan , in which 145 people were killed , 132 of them children . Analysts say the Afghan and Pakistan Taliban groups are closely affiliated , often sharing resources and jointly plotting attacks on either side of the porous border . However , a spokesman for the Afghan Taliban condemned the Peshawar attack Tuesday because it involved the `` deliberate killing of innocent people , women and children . '' Separately , two bomb explosions Wednesday morning in Nangarhar 's capital city , Jalalabad , targeted Afghan police vehicles , killing two Afghan policemen and injuring five others , said Zia Abdulzai , a spokesman for the provincial governor . The continuing violence comes as Afghan security forces prepare to take on greater responsibility for ensuring the country 's security as international forces transition to a supporting role . Who are the Pakistan Taliban ?
Taliban spokesman says the attack targeted Afghan security forces personnel . Afghan official says a suspected drone strike killed 11 Taliban near the border with Pakistan . Afghan security forces storm a bank raided by insurgents in Helmand province . Police say five civilians and three members of the security forces died in the attack .