AlQa'dah 17, 1432, Oct 15, 2011, SPA - Two civilians were killed and three security guards injured when suicide bombers attacked a security forces office in central Afghanistan, officials said on Saturday. "A car bomb explosion took place within the gates of the Provincial Reconstruction Team in Panjshir early morning followed by four other suicide bombings," the Interior Ministry press office was quoted as saying by the German Press Agency "DPA". The casualties were all caused by the four suicide bombers on foot, the statement said. A spokesman for the international troops in Kabul confirmed the attack in Panjshir province, 100 kilometres north of Kabul. "My reports indicate that there were no coalition casualties involved in this attack," Sergeant Christopher Dewitt said.