LOOK: This is the "mock" IED found at Pearson earlier this month

U.S. customs officials have released a photo of a "mock" explosive device that was found in a suitcase at Pearson airport earlier this month.

The flight was supposed to take off from Toronto to Chicago at around 7 on a Thursday morning, but instead it sat on the tarmac for four hours while officials investigated.

Police examined the device and determined it was not real.

Joseph Galaska, 58, was arrested and charged with mischief. He was headed home at the time to the Milwaukee area after spending time in Brazil with his wife and a friend.

His wife had claimed that it was not a fake bomb but an alarm clock.