Pittsburgh Police detoured the final segment of the race course because of an explosive device found in a small microwave oven on the sidewalk at 11th Street and Penn Avenue.
Police cordoned off several blocks near the original finish lines for the marathon and half-marathon. The bomb squad was on scene and used a robot to detonate the device about 10:5 a.m.
The finish line for the full marathon was moved to 13th and Smallman streets; for the half-marathon, Ninth and Fort Duquesne Boulevard, after the bomb threat.
Police ordered all runners and pedestrians out of an area bounded by Ninth and 13th streets, the Allegheny River and Liberty Avenue.
Pittsburgh post-gazette.comKenyan wins marathon; race disrupted by bomb scare