Among the victims of Sunday's attack was local radio journalist Shahid Naimi, according to police, who happened to be near the bus when the bomber blew himself up. Naimi was the second Afghan journalist to die in the past week, after the mutilated body of Noor Ahmad Noori was discovered in southern Helmand province on Thursday. Noori had worked for the New York Times. The motive for his killing was unclear, with police saying only that an investigation was underway. Hashmat Stanikzai, the chief spokesman for police in Kabul, said the blast aimed at the bus had also injured a number of children who were also in the vicinity of the attack. Writing by Jessica Donati; Editing by Paul Tait and Ron Popeski