The FBI announced a new $10,000 reward for information on a 10-year-old cold case involving the execution-style slaying of a 44-year-old man, whose body was found in Hawaii Volcanoes National Park.

An autopsy showed Arman B. Johnson died of a single gunshot wound to the upper-back/neck fired from a handgun.

A passerby found his body near the 71-mile marker of Mamalahoa Highway, about 100 yards from the edge of the road, near Kahuku Ranch,  on the southern edge of Hawaii Volcanoes National Park on April 13, 2005.

.Johnson was wearing a tank-top shirt, swim shorts, socks, and slipper sandals.

The FBI said Johnson relocated to Hawaii Island from Seattle in 1984, and lived on both the Kona and Hilo sides of the island. He had a bachelor’s degree in sports medicine and worked as a massage therapist at local resorts. During his time in Hawaii, Johnson also hosted a reggae music show on local radio station.

FBI Special Agent-in-Charge Paul D. Delacourt said, “A decade has passed since the murder of Arman Johnson. We are hoping that the passage of time may embolden a witness to come forward and tell us the truth about how and why this tragic act of violence occurred.”

Tips can be called into the Honolulu FBI at (808) 566-4300.