CSI: Crime Scene Investigation will return to Las Vegas for a 15th season, but Paul Guilfoyle will not.

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Captain Jim Brass (Guilfoyle) will be written out of the series after 14 years on the job. One of the last original cast members, Guilfoyle is set to make his exit during the season finale.

The upcoming exit was decided by producers, according to The Hollywood Reporter, and not of Guilfoyle's own design.

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"Paul made Capt. Brass a standout character," said CSI exec producers Carol Mendelsohn and Don McGill, according to The Hollywood Reporter. "He is not just an original cast member, he is an original. In a show about forensics, fans always looked forward to the handcuffs coming out, and Capt. Brass putting his spin on the crime of the week, just as Paul Guilfoyle put his indelible stamp on the character and the show. He will be missed."

Marg Helgenberger, who formerly portrayed Catherine Willows and exited the CBS program after season 12, took to Twitter to congratulate Guilfoyle on such a long run.

"Congratulations to #PaulGuilfoyle for 14 outstanding years on @CSI_CBS! Captain Brass was a #BAMF!" Helgenberger wrote.

Titled "Dead In His Tracks," the season finale will air on May 7. The manner of Capt. Brass' departure is unknown.

CSI airs Wednesdays at 10 p.m. ET on CBS. Click the video below to see a preview for the series' most recent episode, "The Fallen."

Tags: CSI: Crime Scene Investigation CBS television