A roadside bomb blast targeting a police convoy in Athens early on Friday caused no injuries but alarmed authorities who had been insisting that Greece’s leftist guerrillas were defeated. The explosion was the first of its kind in Greece for over a decade and the first bomb attack since the end of this summer’s Athens Olympics, Europe’s biggest peacetime security operation. “Police are treating this explosion very seriously because it has been a long time since something like that has taken place,” a police source said. “This was a well-planned strike, something that has not happened in years.” Full Story