Burleson police are investigating the murder of a 17-year-old teenager. The victim was shot Monday at 11:20 p.m. at a townhome complex off I-35 near Crowley Rendon Road. Shaunathon McMahon was found on a basketball court in a common area of the complex. Police say he did not live there. Police have made no arrests. They are looking for people with information to come forward.