Rubble is all that's left of this police station in Libya's eastern city of Benghazi.<br/> <br />The Wednesday blast flattened the building and shattered windows nearby, however, no casualties were reported.<br/> <br />It had been emptied for repairs following previous attacks, say authorities.<br/> <br />This security official described the bombing as "extreme terrorism", adding that the explosives were set by professionals.<br/> <br />The same station was set aflame last month in a possible act of revenge over the killing of a man during a separate attack on officers.<br/> <br />Libya's government is still struggling asset its authority as tensions between officials and rebel fighters turned militias rise of late.<br/> <br />Benghazi has become a flashpoint for this kind of violence and has witnesses a recent wave of attacks on security forces.
