At least six people were killed after an unknown perpetrator fired shots during a Fourth of July parade in Highland Park near Chicago, officials say. According to a police spokesperson, 24 people have been brought into hospital following the shooting in the Chicago suburb. The shooter was still fugitive, the spokesperson said, but a weapon had been recovered at the crime scene. The suspect was described as a white male between the ages of 18 and 20. According to a spokesperson for the Lake County Sheriff’s Office, it appeared the perpetrator shot from a rooftop. Highland Park Mayor Nancy Roter…