HOUSTON --Authorities are searching for a missing 72-year-old man who suffers from Alzheimer's. Thomas Vela was last seen around 4:30pm Thursday at his home in the 7800 block of Battlecreek Drive in Houston. He was wearing a beige jacket, a green T-shirt and blue jeans. Vela suffers from Alzheimer's and high blood pressure. He also wears glasses. Anyone with information regarding his whereabouts is asked to contact the Harris County Sheriff's Missing Persons Unit at 713-755-7427.