The FBI is investigating a grisly murder at a food processing plant in Moore, Oklahoma. According to police, the suspect, 30-year-old Alton Nolen walked into the plant with a knife and beheaded the first person he saw.
Prior to being fired, witnesses tell police Nolen was trying to convert co-workers to Islam. CNN's Erin Burnett speaks with Sgt. Jeremy Lewis from Moore police department about the latest in the investigation.