One American was among nine people killed at the Serena Hotel in Afghanistan's capitol, State Department spokesperson Jen Psaki said Friday. She did not provide any further information about the deceased. The victims were slain execution-style while they dined at Kabul's most upscale hotel on Thursday, government officials and sources told NBC News. The victims included four women and two children. Four foreigners, including two Canadians and a Paraguayan, were among those killed at the Serena Hotel. A three-hour battle involving Afghan special forces ended with the gunmen dead, officials said. The gunmen shot most of the victims in the head execution-style, according to witnesses and government officials. Among the dead is a senior AFP reporter in Kabul, Sardar Ahmad. Ahmad, 40, was killed with his wife and two of his three children, the news service said in a statement.