The Marion County Sheriff's Office is investigating the suspicious death on January 30.
Detectives on Friday released flyers of Daniel Nieves, 88, to the community to ask for help and information. Investigators believe jewelry in the images may have been taken from the victim's residence at the time of his death.
Anyone who has information about Nieves' death could be eligible for a reward of up to $1,000. Call Crime Stoppers at 368-7867 or Detective Erik Dice at 368-3545.