MESA, Ariz. – A Mesa pet store employee is behind bars and accused of second-degree murder after police say he shot someone who was trespassing. At around 6 p.m. on Jan. 27, officers responded to the area of Alma School Road and 8th Avenue for reports of a shooting at Pratt’s Pets. 911 dispatchers were told an employee of a pet store had been involved in a shooting behind the business.