A Joliet man faces a first-degree murder charge after a Chicago woman was fatally shot at the Hammond, Ind. Walmart where she worked.Dorian Kevon Robertson, 22, of Joliet, is being held at the Lake County (Ind.) Jail. He's accused of killing Dakota Norwood, 21, according to Hammond police Cpt. Steve Kellogg.Investigators determined Norwood and the suspect knew each other and had been in a relationship, Kellogg said. The exact nature and length of that relationship remains under investigation, according to Kellogg.About 9:09 a.m. Monday, Hammond police were called to the Walmart, 1100 S. 5th Ave., after an off-duty Hammond police officer working store security reported there had been a shooting and a suspect was in custody, according to Kellogg.Norwood was working at the store when a conversation with Robertson, who she'd been in a relationship with, escalated into a physical altercation, Kellogg said.Robertson allegedly retrieved a firearm and shot Norwood multiple times.Norwood, of Chicago, was pronounced dead at 10:27 a.m. Monday, according to the Lake County coroner's office. An autopsy determined Norwood died of multiple gunshot wounds and her death was ruled a homicide. ...read more read less