Lake Forest, IL -- (Sports Network) - Embattled defensive tackle Tank Johnson was waived by the Chicago Bears on Monday following yet another off-field incident.

"We are upset and embarrassed by Tank's actions last week," said general manager Jerry Angelo. "He compromised the credibility of our organization. We made it clear to him that he had no room for error. Our goal was to help someone through a difficult period in his life, but the effort needs to come from both sides. It didn't, and we have decided to move on."

Johnson was stopped for speeding in Arizona on Friday and was then cited for "being impaired to the slightest degree," a police spokesman told the Chicago Tribune.

The three-year pro out of Washington has already been suspended for the first eight games of the 2007 regular season for violating the NFL's personal conduct policy.

Johnson was sentenced to 120 days in jail on March 15 for violating probation from a gun charge in 2005. He was released on good behavior after serving half of the sentence and met with NFL commissioner Roger Goodell in May.

Last December, Johnson was arrested on misdemeanor weapons charges after police raided his home and found several guns. The raid resulted in six misdemeanor counts of possession of a firearm without a firearm owner's ID card.

Goodell had told Johnson that he would be prepared to reduce the suspension to six games if certain conditions were met. That reduction is now more than unlikely.

Originally a second-round pick in the 2004 NFL Draft, Johnson posted 26 tackles and 3 1/2 sacks in 14 regular-season games last year, helping the Bears to the Super Bowl. He has 63 tackles and nine sacks for his career.