UPDATE 4 p.m.: Purtle has been found safe.
According to a post on the Union County Sheriff's Office, deputies are seeking assistance in locating 68 year-old Gerald Purtle.
Purtle, who has health issues on record according to the post, was last heard from around 10 p.m. Sunday. He is believed to be wearing a tan button-down shirt.
According to the post, Purtle spoke with a family member Sunday night after his car ran out of gas; he told his relative that he was walking to his camp off the river near the Moro Bay Bridge. He told his family member that he was walking on a gravel road with tall grass.
Purtle's vehicle was later located on Highway 63 about two miles west of Pigeon Hill Road.
Anyone who has seen or does see Purtle is asked to contact the UCSO at 870-864-1990.
This is a developing story. The News-Times will provide updates as they become available.