Amid the bustle of lorries and cranes that whip up clouds of dust and in sweltering heat, the site at Barra da Tijuca has come on considerably in recent months. PHOTO: REUTERS
Military bomb disposal experts were at the scene of the explosion and kept crowds away with police.
The explosion stunned crowds gathering for the end of the race. The race leaders were about 100 kilometers (60 miles) away at the time.
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