CHICAGO (AP) _ Fake ice for a scene in the movie ''Poltergeist III'' caught fire and exploded in an underground parking garage, causing three minor injuries and $250,000 damage, officials say.

Plastic that was poured into six cars so the vehicles looked frozen was ignited early Wednesday by an explosion set off for a scene in the horror movie, said Anton Barton, fire chief for suburban Oakbrook Terrace.

''A ball of fire chased everyone out'' of the garage in an Oakbrook Terrace office building, he said. ''There was a lot of structural damage to the concrete.''

No more explosions are planned during the next six weeks of shooting in the Chicago area, the movie's publicist said.

In September, four people were injured on Chicago's North Side when a miscalculated special effect caused an explosion on location of the television series ''Crime Story.''