Swiss prosecutors declined today to confirm the names or the target but said three people were arrested with "explosive and further items in their car" as well as a note "indicating a planned attack on the branch of an international company."

IBM Switzerland spokesman Chris Sciacca says the company "has been notified by Swiss police authorities about an investigation and is cooperating accordingly."The SonntagsBlick newspaper said police arrested a man and woman from Italy and a Swiss man April 15 near Rueschlikon, where IBM is building a nanotechnology laboratory.