A Los Angeles Fire Department captain was off-duty when he died on Sunday, officials said.

Officials announced the death of LAFD Capt. II Keith Stewart on Tuesday morning via Twitter saying “his loss will be felt throughout the LAFD.”

LAFD spokeswoman Margaret Stewart, who said she is not related to the captain, said he was an active member of the fire department but was off-duty when the death occurred.

Stewart declined to give more information on the death and said any information on services would be up to the family.

“With 24 years of service, he was a leader, mentor and friend to so many #RIP #Wehaveitfromhere,” the fire department wrote on its @LAFDtalk Twitter account.

LAFD Capt. Branden Silverman said Stewart was a “great guy” who always had a smile on his face.

He was “just a fun guy to be around,” said Silverman, who worked many overtime shifts under him. “He took care of his crews.”

The #LAFD is deeply saddened to announce the #ActiveDutyDeath (off-duty) of Captain II Keith Stewart Captain Stewart passed on 12.10.17 and his loss will be felt throughout the LAFD With 24 years of service, he was a leader, mentor and friend to so many #RIP #Wehaveitfromhere pic.twitter.com/yf2Y6PEBmw — LAFD Talk (@LAFDtalk) December 12, 2017

According to Stewart’s Linkedin page, he lists West Covina as a residence. He has been a Captain II since Aug. 2014, or for three years and five months, according to the site.

Additionally, Stewart was a Captain I from November 2005 until August 2014.

He lists two certifications on the Linkedin page of hazmat specialist and hazmat technician.

His interests, he writes, include the city of Los Angeles, the Fire Hogs Motorcycle Club and Professionals in Emergency Management.