Plano police are investigating the murder of 69-year-old Patrick King from Illinois, whose body was found with blunt force trauma in the backyard of a home on Bending Oak Trail. The suspect, 39-year-old Andrew Swetland from Los Angeles, was arrested at DFW Airport on Wednesday morning. Police confirmed that King and Swetland knew each other and that this was not a random act of violence; Swetland is related to the homeowner where the incident occurred. The Collin County Medical Examiner is still determining King's cause of death, and the investigation is ongoing. No motive or additional details have been released at this time.