As Jesse Kendall, 18, and four friends made their way to a Lil Durk concert at the United Center Sunday night, they were confronted by four assailants. The attackers robbed them at gunpoint before fatally shooting Kendall, according to Chicago police. "Empty your pockets! Gimme all your sh—!" the gunmen screamed while aiming guns at them, according to a police report obtained by the Chicago Sun-Times. The attack unfolded as the five walked in the 100 block of North Wolcott Avenue, just minutes before the concert began at 7 p.m. After they gave the robbers their property, Kendall walked a few steps south on Wolcott Avenue and began yelling at them, "They're not gonna do anything."The four then confronted Kendall, and one asked, "What boy?" before pistol-whipping him in his head, causing him to collapse. When he fought back, they "battered" him before shooting him in his chest, according to the police report. The four then "reapproached" the other victims — two Elgin sisters, 16 and 17, an 18-year-old Elgin woman and a 20-year-old Chicago man — "keeping an eye" on them as they sprinted away looking for help, the report said. Kendall, of Elgin, was taken to Stroger Hospital in critical condition where he was pronounced dead at 2:52 a.m. Monday, according to the Cook County medical examiner's office. Kendall died of multiple gunshot wounds, and his death was ruled a homicide, according to the medical examiner's office.As the attackers ran away, responding officers found two other people who had been shot, including a 19-year-old man shot in his ribs and a 15-year-old shot in his hand and abdomen. The 19-year-old was listed in critical condition; the 15-year-old was in good condition. Both were recovering at Stroger, police said.A GoFundMe fundraiser created on behalf of Kendall's family had raised more than $6,500 as of Tuesday morning."Words can’t describe anything right now, I lost a piece of my self last night rest in peace and sleep well Jesse," Gary Kendall, his father, posted on Facebook. Elgin School District U-46 confirmed one of its students was killed in the shooting in a statement released Monday morning."We are deeply saddened to confirm the passing of one of our Elgin High School students following a tragic incident over the weekend. Our thoughts and heartfelt condolences are with the student’s family, friends, and all those affected by this loss," the district said in the statement. "In response, our school is providing counseling and support services to help students and staff during this difficult time."No arrests have been made. Last year, unconfirmed reports of shots fired near the end of Lil Durk’s set at the United Center sparked a “stampede” that injured several people.