At least three Afghan soldiers were injured Sunday when a suicide bomber targeted the National Directorate of Security (NDS) building in the river port of Torkham in eastern Afghanistan, an official said, according to dpa. "A suicide bomber entered the city department of NDS in Torkham port, shot one NDS soldier and then detonated his explosives injuring two others," said Hazrat Hosein Mashraqiwaal, a spokesman for provincial police chief of Nangarhar province. The incident in the town in eastern Nangarhar, near the Pakistan-Afghanistan border, occurred at around 7 am (0230 GMT), he said.