The footage can be found here.
Houston police says the video depicts the suspect riding a bicycle in a community near the medical complex after the killing.
Dr. Mark Hausknect, a cardiologist, for four decades, was shot and killed on North Main Street while riding his bicycle to work at the Texas Medical Center earlier this month.
The suspect was wearing a blue, short-sleeved polo, a khaki baseball cap and khaki shorts. He was riding with a olive-green backpack.
Video: Courtesy HPD