Mark Leland Kirks, 42, was last seen December 6, 2008, in Waco, Texas. He had lived for more than eight years in a group home on North 43rd Street and had a history of wandering — once walking about 40 miles to his family’s home in Whitney. He suffered from mental illness and developmental disabilities and required regular medication, which he did not have when he disappeared.

At the time he went missing he was wearing a gray and black hooded sweatshirt, black warm-up pants and black sneakers. He was social and could use public transportation, but his medical condition and lack of medication left him vulnerable and possibly disoriented, and the cold weather and inadequate clothing increased concern for his safety. An extensive search found no trace and the case is classified as endangered.

If anyone in Waco or Whitney saw Mark around December 6, 2008, or has information about his movements, please contact the Waco Police Department.