A Silver Alert was issued Monday for a 76-year-old man last seen in Pleasant Grove.
Boyd Morelock was last seen about 9 a.m. Monday in the 1000 block of Rain Forest Court, near Chestnut Park.
Authorities say Morelock has been diagnosed with a cognitive impairment and his disappearance is a threat to his safety.
He is described as a white man who is 5-10 and weighs about 115 pounds, with brown hair and brown eyes. He was last seen wearing a Dallas Cowboys hat, blue overalls with a white tank top underneath, white socks and white shoes.
Anyone with information about his whereabouts may call Dallas police at 214-671-4065.