At least 13 persons were killed when a suicide bomber struck a bus carrying security personnel in Afghanistan's capital Kabul on Monday, officials said.
"The bus was running along a busy road in Pul-e-Charkhi area at around 6.30 a.m. A terrorist rammed his explosive-laden car into the bus, causing a heavy explosion," witness Farhad Mohammadi was quoted by Xinhua news agency as saying.
"Most of the victims were foreign security guards onboard the bus. Initial information showed they were Nepalese," a security official said.
He also added that twenty-five others were injured in the attack.
Taliban militant group has claimed responsibility.