Ray Dunstan is a bus driver for patients with disabilities, from whom he secretly robbed. Dunstan would also be physically aggressive with them in ways difficult to report, such as pinching Katie Tolliver, a woman born with Down syndrome whose necklace was stolen from her by him.
When Katie was raped and impregnated, Dunstan became a suspect due to his actual crimes Katie reported. He was arrested and interrogated, but he was cleared of suspicion. Dunstan was arrested and imprisoned for the robberies. (SVU: "Competence")