Officials reacted via social media in the hours following the news.
"It’s strange to imagine Metro government without Charlie Cardwell, whose steady presence and keen mind for finance have helped lead our city forward for 60 years," Nashville Mayor Daivd Briley said in a Facebook post. "My condolences go out to Charlie’s family. Nashville—and I—will miss him dearly."
Briley also announced via Twitter that flags in Nashville will be lowered to half-staff through Thursday, May 16 and the Korean Was Veterans Memorial Bridge will be lit blue in his honor.
Other city officials also spoke of Cardwell's service to the county and city.
"This is a sad day for Davidson County as we mourn the loss of Charlie Cardwell," Nashville Fire Department Cheif William Swann said in a May 13 statement. "He dedicated more than 26 years to the people of Nashville as our trustee. Personally, he was always supportive of me and the Nashville Fire Department. We join with his family, friends and colleagues who will miss this true public servant."
The trustee's office collects property taxes and other tax types in Davidson County and oversees tax-relief programs. Cardwell was appointed as trustee in 1993 and was elected to the position by voters for six four-year terms, according to Metro's website.
Metro Nashville officials have not yet made a public announcement as to how Cardwell will be replaced.
This story is developing; stay tuned for updates.