Dallas Mavericks guard Delonte West has been suspended for conduct detrimental to the team, Mavs coach Rick Carlisle said.

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 Carlisle did not specify a timetable for West’s suspension.

Sources told ESPNDallas.com that West’s suspension stems at least in part from an outburst in the locker room after the Mavs’ 123-104 preseason win Monday over the Houston Rockets. He had 2 points, 2 assists and 1 rebound in 16 minutes during the win.

West tweeted later Monday: “Sorry moma…” and “I showed off on ur birthday again…”

West, an eight-year veteran entering his second season with the Mavs, has been diagnosed with bipolar disorder.  West’s bipolar disorder was a factor in a September 2009 incident that resulted in his arrest on weapons charges after he was pulled over while driving a three-wheel motorcycle in Upper Marlboro, Md.

West was sentenced to eight months of house arrest for that incident and suspended for 10 games by the NBA.

West was a valuable role player for the Mavs last season, averaging 9.6 points and 3.2 assists and playing tenacious defense while seeing time at both guard positions.

WRITTEN BY Tim MacMahon | ESPNDallas.com & FULL STORY HERE