At least four people were killed and 20 injured, four of them critically, after a mass shooting at high school reunion at a South Carolina bar early Sunday, according to authorities. All four victims were found dead at the scene after at least one shooter opened fire on the crowd of hundreds during the shocking attack at Willie’s Bar and Grill on St. Helena Island just before 1 a.m., the Beaufort County Sheriff’s Office said. “Upon arriving at the scene deputies made contact with a large crowd of people, several of which were suffering from gunshot wounds,” the statement read.