The Omaha police bomb squad on Friday detonated a toolbox containing chemicals and electronics that was deliberately left in the street near 14th Street and Capitol Avenue.
Officers removed some of the chemicals for analysis before blowing up the toolbox, said Sgt. Matt Manhart, head of the bomb squad.
Manhart said the toolbox contained several chemicals in separate containers, according to a police X-ray.
A caller to 911 alerted police to the toolbox about 2:40 p.m.
Police were investigating a report that a vehicle pulled up and that someone inside placed the box on the street and drove off. Witnesses told police two people were inside the vehicle.
The toolbox was found on Capitol Avenue between The World-Herald's Freedom Center and the Gavilon building now under construction.
The box was just east of the intersection and closer to the Gavilon building, Manhart said, and was detonated about 5 p.m.
Manhart said officers initially thought the toolbox fell out of the back of a work truck. However, it appeared neatly placed and didn't have a scratch on it.
Police diverted traffic from the area, blocking the Interstate 480 exit ramp to 14th Street as a precaution.
Construction workers at Gavilon were told to move to the south side of the building, but they were not ordered to leave the site, Manhart said.
The door to the Freedom Center lobby was locked to prevent pedestrian traffic from entering and exiting the building. Other parts of the building remained accessible.