UPDATE (8/20/14): The Winnebago Co. State's Attorney's office reports Boose will spend 26 years in prison. He reached a plea deal with prosecutors. Instead of first degree murder, Boose pled guilty to second degree murder and aggravated discharge of a firearm. It stems from a shooting incident in May of 2013. He fired into a crowd and killed 22 year-old Katelynn Gurley.
Joe M. Boose, 20, of Rockford, turned himself into the police department Saturday night. During the investigation, 2 firearms were recovered. Boose is currently on probation in Winnebago County.
He's now charged with first degree murder and unlawful use of a weapon in the death of Katelynn Gurley, 22, of Rockford.
Gurley's family says the mother of two attended a party in the 600 block of College Avenue where she was shot during an argument.
Police responded to that incident shortly before 3:30 Saturday morning. She was pronounced dead at the scene.