Boston lost a 5-year active-duty emergency medical technician Thursday.

EMT Matthew Clancy, 34, was a member of the 2017 recruiting class, according to statements released by Boston EMS Friday. There was no cause of death listed.

“It is with the deepest sadness and sense of loss that we inform our members of the sudden loss of active duty EMT Matthew Clancy,” wrote Boston EMS Chief Jim Hooley in a statement shared to the department’s Facebook page. “We extend our condolences to Matt’s family.”

His last field assignment was Ambulance 6 in South Boston, Hooley said, but had been specially assigned to headquarters last fall to learn and give input on the new electronic patient care report, or “electronic chart,” system the service transitioned to in December. Hooley said that Clancy had been valuable as a trainer for the entire department on the new system and that Boston EMS “took advantage of a lot of the talents he had.”

Of particular note was how welcome he made the new recruiting class. While most members of EMS recruiting classes often “feel invisible until they’re done” with training, Hooley said, Clancy was well known and well liked among recruits for taking time out to sit with and talk with them at lunch and to encourage their progress.

Clancy’s death is “still a shock to everyone here,” Hooley said.

Clancy was in Florida visiting his mother when he died, according to Matthew Anderson, the president of the EMS division of the Boston Police Patrolman’s Association, the union for EMS workers.

While Anderson did not often work with Clancy he had nothing but kind words to say about Clancy’s work as an EMT.

“He was one of those EMTs you’d always want on a call … He always had a smile on his face,” Anderson said. “We will remember him fondly and all EMTs should strive to be like Matt.”

Funeral arrangements have not been announced.