A veteran St. Lucie County firefighter was found dead at a fire station by crewmembers Sunday night.
Lt. Mark Morrison, 53, was found unresponsive at Station 3 on Ravenwood Road around 5:49 p.m. and was declared dead at St. Lucie Medical Center after attempts to revive him were unsuccessful, according to TCPalm.com.
An autopsy is being performed to determine the exact cause of death.
"This is a very sad day for all of the St. Lucie County Fire District family as we lost one of our own," Fire Chief Ron Parrish told the newspaper. "Mark was a committed firefighter and officer. He was a mentor to those who served with him and a friend to so many."
The 25-year veteran is survived by his wife and two daughters.
Funeral arrangements are pending.