21.   Police supervised a controlled explosion of the vehicle that determined it did not contain explosives.

22.   A police spokesman said the bag, which contained no explosives, was apparently intentionally left in a parking garage.

23.   A law enforcement source in Washington said there is evidence that Nichols drove the rental truck containing the explosives to Oklahoma City.

24.   A guard at the station told investigators he immediately took outside a biscuit box left by the man in the station, suspecting it contained an explosive.

25.   A steel-plated tractor rumbles through a mine-riddled neighborhood, scooping up loads of earth and debris likely to contain dangerous explosives.

26.   A police spokesman in Laval, north of Montreal, said a bomb squad blew up a package containing explosives.

27.   A suitcase containing explosives was found in a downtown subway station in the capital, police said Tuesday.

28.   After a sniffer dog confirmed that the package contained explosives, a special sapper-robot exploded it.

29.   Ahmed said it appeared that the motorcycle containing the explosives was parked near a large police van, killing several officers waiting to return prisoners to jail.

30.   Although the army said it was unsure whether the trailer contained explosives, it evacuated a dozen nearby homes.