Say it ain’t so!

Michael Weatherly is leaving NCIS after 13 seasons, CBS announced on Tuesday, Jan. 5, according to Us Weekly. The 47-year-old actor — who portrays Special Agent Tony DiNozzo on the hit show — joined the cast in September 2003 for the series’ premiere season.

“After 13 years on NCIS, Michael Weatherly is leaving the show at the end of this season,” the network said in a statement. “He is a valued part of the CBS family, and the immense charm and talent he brings to the screen as ‘Very’ Special Agent Tony DiNozzo has helped make NCIS what it is today — the No. 1 drama in the world.”

“We thank Michael for all of his contributions to this successful franchise and look forward to continuing to develop projects with him as part of our ongoing development deal,” the statement continued.

RELATED: NCIS‘ Michael Weatherly Reveals, “I Lost 35 Pounds!”

Following CBS’ announcement, Michael took to Twitter to confirm his departure from the long-running show. “DiNozzo is a wonderful, quixotic character and I couldn’t have had more fun playing him over the past 13 seasons,” he wrote.

“I will miss the amazing crew and cast, who are like family to me, and to the fans all over the world — THANK YOU, it’s been a fantastic ride!” he wrote in a subsequent tweet.

We’ll miss you, Michael!