Gibson has been on the show since it began in 2005. He played criminal profiler Aaron Hotchner.
In a statement, CBS TV Studios and ABC Studios said: “Thomas Gibson has been dismissed from ‘Criminal Minds.' Creative details for how the character’s exit will be addressed in the show will be announced at a later date.”
Gibson said in a statement: "There were creative differences on the set and a disagreement. I regret that it occurred."