An executive at Massage Envy died in police custody this week after allegedly attacking his parents with a stun gun in Scottsdale, Arizona. The mother of 55-year-old Lee Edward Knowlton reportedly called 911 at about 7 p.m. Monday to report that her son, who was previously an executive at Cold Stone Creamery, was assaulting her and her husband. When police went inside, they found Knowlton and his 80-year-old father on the floor covered in blood. As authorities were handcuffing Knowlton, he allegedly stopped breathing. He was immediately taken to a local hospital, where he was soon pronounced dead. His parents were in stable condition as of Tuesday evening.