CHULA VISTA (CNS) - An 84-year-old Chula Vista man went missing Thursday morning after telling relatives he was going to a store.

Robert Walls left his home about 8:30 a.m. and told his family he would be gone for about 90 minutes, according to police.

"It is unknown if Mr. Walls ever made it to the store," Chula Vista police Capt. Gary Wedge said. "Mr. Walls is considered at risk due to his age, and also (his) need for taking medication."

Walls is a 5-foot-10-inch, roughly 180-pound white man with gray hair and green eyes. He drives a red 1999 Chrysler Sirus four-door with California license plate 4GOS973.

Anyone spotting a man matching Walls' description is asked to call Chula Vista police at (619) 691-5151.