COLLIER COUNTY, Fla. (WFLA) — A Florida man on death row for the 1995 murder of three Cracker Barrel workers has died in prison. He was 55.

Records from the Florida Department of Corrections showed that Brandy Jennings died in prison on Sunday. His cause of death was not released.

Naples Daily News reported that Jennings and his accomplice Charles Jason Graves were each convicted of three counts of capital first-degree murder and one count of robbery in the killings of Jason Wiggins, Dorothy Siddle and Vicki Smith.

Court records showed that Jennings and Graves were both former Cracker Barrel employees and had two failed attempts to rob the restaurant.

The news outlet reported that Jennings and Graves entered the Cracker Barrel off Interstate 75 in Naples on Nov. 15, 1995, stealing about $6,000 and killing Wiggins, Siddle and Smith, who were found in the freezer with their hands bound and their throats slit.

Jennings and Graves were picked up by police in Las Vegas after Collier County investigators issued a nationwide bulletin.

Graves and Jennings were convicted in separate trials in Pinellas County in 1996.

Jennings received the death penalty and Graves was sentenced to life in prison.

Jennings’ execution warrant was never signed, according to WINK.