A pipe bomb exploded on the route of a charity race in the U.S. state of New Jersey on Sept. 17, forcing the event to be cancelled but causing no injuries, BBC reported. The bomb had been placed in a garbage can along the route of the 5km Semper Five run in Seaside Park. The participants would have been in the area but the race had been delayed because of an unattended bag. The charity race is in aid of Marines and sailors and this year attracted thousands of runners. The blast occurred on a boardwalk area, which authorities sealed off. State and federal law enforcement agencies are investigating the explosion and are sweeping the area for more devices.