Detectives continue to search Laurence “Larry” Thomas, 55, of Cleveland.
Johnson’s family said he disappeared in late January, and hasn’t been seen for a week.
"That’s why I know that there's something wrong,” said Thomas’ sister, Pamela Thomas-Myers. “There’s no way in the world that he would do this and at least not call me. He and I, we were close."
Thomas-Myers said Johnson is their mother’s caretaker, and he never strayed far from his routine: work and back to his mother’s house.
"It’s been going straight to voice mail from day one,” said Thomas-Myers.
Thomas is 5' 9", 150 pounds. Police said he drives silver, four door Camry.
Anyone with information regarding Thomas’ whereabouts has been asked to contact Cleveland Police Detective Callahan at 216-623-3138.