(Des Moines, IA) -- A person of interest in a recent murder on Des Moines' north side is now charged with murder. The Polk County Sheriff's Office says 38-year-old Courtney Shane Smith turned himself in Monday afternoon and is now charged with 1st degree murder. Smith is accused of killing 51-year-old Scott Ala Crane of Des Moines at 340 Northeast 46th Avenue back on August 6th. Smith will be in court for his initial appearance Wednesday. The sheriff's office says the investigation remains open.