Walters was shot in the neck and hit by a car while on duty in 2003, which paralyzed him after suffering severe injuries to two cervical vertebrae. His death 17 years later came as a result of complications related to his injuries and is considered a line-of-duty fatality.
"Dan grew up locally, played professional baseball here in San Diego and proudly served his city as a police officer," the San Diego Police Department said in a statement. "He will forever be remembered by the members of this department."
The SDPD also provided a tribute to the former officer on its official Twitter account:
San Diego Police Department @SanDiegoPD
Today we rendered honors to our brother, Officer Dan Walters who died today as a result of injuries sustained on-duty in 2003. We are thankful for Dan and his legacy of continuing on despite the circumstances life presented to him. Our department will never forget you Dan. https://t.co/ICIUuHDnLu
The Santana High School product was taken in the fifth round of the 1984 MLB draft by the Houston Astros. He was traded to the Padres four years later and finally reached the majors in 1992.
In two seasons with San Diego, Walters hit at a .234 clip with five home runs in 84 games.
He continued to play in the minors until suffering a spine injury in 1996. He joined the police department in 1998 following his retirement from baseball.