A disgruntled businessman at the wheel of an armoured bulldozer has gone on a rampage through the business district in the ranching Colorado town of Granby, demolishing buildings and terrifying residents.
The man, in his early 50s, smashed into several buildings, severely damaging them, and knocked down telegraph polls and powerlines in the bulldozer modified with what appeared to be steel plates.
Unconfirmed reports on local media said the man was armed and that shots had been fired from the bulldozer, but police could not confirm the claims.
Police SWAT teams, National Guard troops and emergency crews watched helplessly as the man ploughed the bulldozer into building after building in the town of Granby in the western state of Colorado for about 90 minutes.
The rampage targeted the library and city hall of the small town, which lies about 144 kilometres north-west of Denver.
Other businesses and shopfronts were also badly damaged.
Police tried to block the path of the tank-like vehicle with another tractor but failed.
The bulldozer, however, later became trapped in the wreckage of a department store that it had devastated.
CBS News quoted friends and neighbours of the man as saying he had earlier threatened to wreck the town with a bulldozer after he had become enraged by a business zoning dispute with town officials.
