The police chief of the southern Afghan province of Kandahar was unharmed Tuesday after a roadside bomb detonated near his convoy, an official said. The explosives were placed in an abandoned wheelbarrow on the eastern outskirts of the provincial capital, also called Kandahar, and were remotely detonated when a convoy of Khan Mohammad Mujahid was passing by, provincial government spokesman Zalmai Ayoubi was quoted as saying by the German Press Agency "DPA".