At least six police officers were injured Sunday when an explosion targeting a police bus went off in Kabul. Afghan police said today that the bomber was riding a bicycle and blew himself up as he approached the bus. The Afghani police spokesman said that initial reports show that six officers were injured in the explosion, although that number might change in the future, the spokesman dead not report any deaths as a result. It is the latest in a series of terrorist attacks that shook the country. Last month, a car bomb targeted NATO vehicles in the same area left three soldiers killed and eight civilians injured.