A Silver Alert has been issued for Ernestine Houston, a 77-year-old woman last seen Oct. 11 in Prosper, according to the Texas Department of Public Safety. Houston was last seen at about 2 p.m. in the 1100 block of East Frontier Parkway. She is described as a Black woman, 5 feet 4 inches tall and weighing 167 pounds, with black hair and black eyes. Authorities believe she may be driving a silver 2021 Volkswagen Jetta with Texas license plate NZS8061. Anyone who sees Houston or has information about her whereabouts is asked to call 911 or contact the Fairview Police Department at 972-547-5350.