Gary Lee Tripp Sr was 69 and a Vietnam veteran when he was found dead in his Jacksonville, Florida home on April 25, 2018. Neighbors alerted police after noticing his door open and not seeing him for a couple of days; officers discovered Tripp shot in the back of the head and the Jacksonville Sheriff’s Office opened a homicide investigation.

Investigators found Tripp’s wallet missing and his bank card used multiple times after his death. Security camera footage from locations including Walgreens and Home Depot showed a woman using the card, and Lisa Deon Williams was later arrested on charges of fraudulent use of a credit card and forgery. Police have not confirmed whether Williams knew Tripp or was involved in his killing, and no one has been charged in Tripp’s murder.

Tripp’s family, especially his son Gary Tripp Jr, has pushed for answers and asked anyone with information to contact investigators. Is there anyone who saw Tripp in the days before April 25, 2018, or who recognizes the person on the surveillance footage?