The Criminal Minds team will be down a BAU team member when it returns on Sept. 28.

Original cast member Thomas Gibson has been fired from the CBS hit procedural following an on-set altercation with a producer, E! News has confirmed.

"Thomas Gibson has been dismissed from Criminal Minds," ABC Studios and CBS Studios said in a statement. "Creative details for how the character's exit will be addressed in the show will be announced at a later date."

Gibson, 54, has played fan-favorite Aaron Hotchner since the show debuted in 2005, and was suspended in July after kicking a writer over "creative differences" while working on an episode he was directing. He had not been on set for the last two weeks.

"I love Criminal Minds and have put my heart and soul into it for the last twelve years. I had hoped to see it through to the end, but that won't be possible now," Gibson said in a statement following his departure. "I would just like to say thank you to the writers, producers, actors, our amazing crew, and, most importantly, the best fans that a show could ever hope to have."