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, RadarOnline.com 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.

RadarOnline.com 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.