Authorities have issued an arrest warrant for the man they believe shot and killed 18-year-old Javon Britten at the Orland Square Mall in Illinois Monday night, according to a Tuesday report from CBS2. Authorities said they are now searching for 19-year-old Jakharr Williams, whom they consider to be armed and dangerous. Police believe that Williams and Britten got into a physical altercation at the mall around 6:45 p.m. Monday night, which grew deadly when Williams allegedly pulled out his gun and fired at Britten. Britten was struck in the chest and taken to a hospital, where he later died; one other bystander suffered minor injuries. Authorities believe the boys knew each other, and that it was an isolated incident. But the shooting still horrified other mall-goers. “We were panicking,” one witness, who was shopping with her four children when she heard the gunshots, told the Chicago Tribune. “It’s hell…You feel like you’re going to die.”