UPDATE
The Palm Beach County Sheriff's Office said Donald Mack has been found safe.
EARLIER STORY
The Palm Beach County Sheriff’s Office said an 84-year-old man from Greenacres has been missing since Monday night.
Around 7:30 p.m., authorities said Donald Mack walked away from Arbor Oaks at Greenacres, a senior living center located at 3400 South Jog Rd.
Mack, who has dementia, is 5 feet 3 inches and weight 122 pounds. He was last seen wearing a blue dress shirt and grey dress pants.
Call PBSO Dispatch at 688-3400 or the nearest law enforcement agency if come into contact with Mack.