"His crime echoes from his grave," the police said in a statement, identifying the killer as a man named Thomas J. Williams.

Florida state police announced that 56 years after the 1968 murder of World War II veteran Hiram Ross Grayam, the killer has been identified and the murder solved.

According to police, the emergence of two people who said the suspect confessed to them helped them determine who killed Hiram "Ross" Grayam, a World War II medalist who was shot execution-style while working on April 11, 1968.

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SON: HE DESTROYED MY FAMILY

The victim's son, Larry Grayam, who was 16 at the time of his father's death, said the resolution of the case had led to mixed emotions.

"He destroyed my family as a young boy and caused me to lead a life of public safety and also work as a photojournalist," Larry Grayam said.

"HIS GUILT WAS ECHOING FROM HIS GRAVE"

Grayam did not return home after delivering milk in April 1968, and deputies later found his body and milk truck deep in the woods in the Vero Beach area, the Indian River County Sheriff's Office said in a statement.

"Through determination and the cooperation of witnesses, new clues emerged: Thomas J Williams, now deceased, confessed to Grayam's murder and his guilt echoed from beyond the grave," the statement said, adding that detectives enlisted the help of several witnesses to investigate the murder.