FORT BEND COUNTY, Texas -

Deputies are asking for the public's help finding a 69-year-old Texas man diagnosed with traumatic brain injury.

The Fort Bend County Sheriff's Office is searching for Chacko Jacob, 69, who was last seen at 3 p.m. Saturday in Sugar Land, Texas.

Authorities said Jacob was driving a black 2008 Mercedes 550 with Texas license plate FJY-846.

Law enforcement officials believe Jacob's disappearance poses a credible threat to his own health and safety.

Jacob was described by the Sheriff's Office as a 69-year-old Asian man who is 5-foot 6-inches, weighs 166 pounds, has black hair and black eyes, and wore a striped shirt and black pants.

Those with information regarding the whereabouts of Chacko Jacob are asked to contact the Fort Bend County Sheriff's Office at 281-342-6116.