The NCIS and NCIS: New Orleans cast are in mourning today following the death of showrunner Gary Glasberg.

Glasberg, 50, passed away in his sleep on Sept. 28. A part of the NCIS family since 2009, the execs death came as a shock to actors and fans alike.

"Gary was our rock, our cheerleader, our team captain. He inspired us with his leadership, his creative instincts and keen insight," the NCIS cast said in an official statement. "NCIS will not be the same without him, and each of us will miss his smiling face and unwavering humor, which lifted us every day."

On social media, the respective casts have kept a mournful silence. Official accounts for both NCIS and NCIS: New Orleans posted the following tribute to their leader:

Glasberg is survived by his wife Mimi and their two sons.

"Today is an overwhelmingly sad day for NCIS, CBS and anyone who was blessed to spend time with Gary Glasberg," Glenn Geller, president of CBS Entertainment, eulogized on Wednesday. "We have lost a cherished friend, gifted creative voice, respected leader and, most memorably, someone whose warmth and kindness was felt by all around him. Our heartfelt thoughts and sympathies go out to his wife, Mimi, his two sons and all his family and friends."

NCIS and NCIS: New Orleans air Tuesdays at 8 p.m. ET and 10 p.m. ET, respectfully.

Tags: NCIS NCIS: NO television CBS