At least 3 men accused of making threats during or after watching the new Batman movie have been arrested in separate incidents, underscoring moviegoers' anxieties and heightened security in the wake of a deadly mass shooting at a Colorado theater showing the film.

A Maine man was arrested when he told authorities that he was on his way to shoot a former employer a day after watching "The Dark Knight Rises," Maine state police said Monday.

Timothy Courtois of Biddeford, Maine, had been stopped for speeding, and a police search of his car found an AK-47 assault weapon, four handguns, ammunition and news clippings about the mass shooting that left 12 people dead early Friday, authorities said.