A bomb hidden on a parked motorcycle exploded outside two court buildings in central Athens on Thursday, damaging cars and shattering windows but leaving no one hurt. The powerful rush-hour blast occurred at 0820 (0620GMT) following a warning telephone call to a newspaper and private TV station. The blast occurred in a densely populated area in the city's Ambelokipi district, shattering windows and nearby shop storefronts, and destroying cars. It sent up a cloud of smoke that was visible across the city. Police had evacuated the targeted buildings, which are used for administrative purposes. State health officials confirmed that no one was injured.<br />RT on Facebook: http://www.facebook.com/RTnews<br />RT on Twitter: http://twitter.com/RT_com