Clay A. Duke -- the man who shockingly shot at a Northern Florida school board before taking his own life -- was a ticking time bomb with a violent past, Breaking Celebrity News is reporting.

EXCLUSIVE DOCUMENT: Clay Duke's Violent Past

At a news conference Wednesday, police shed light on Duke's violent past -- saying he had shot at his wife while she was attempting to get inside a car several years ago.

Breaking Celebrity News has uncovered Duke's rap sheet from that incident. The documents show that on October 20, 1999, Duke was arrested and charged with several felony charges.

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The docs also show that on January 18, 2000, he was found guilty of aggravated stalking, shooting into a vehicle with a mask and wearing