Woman beheaded at Oklahoma workplace by Muslim co-worker.

MOORE, Okla. - Police say a woman who was killed by a co-worker at a food distribution center in suburban Oklahoma City was beheaded and that witnesses have said the suspect had been trying to convince co-workers to convert to Islam.

Moore Police Sgt. Jeremy Lewis said Friday that 30-year-old Alton Nolen had been terminated from Vaughan Foods in Moore shortly before the incident took place on Thursday afternoon. Colleen Hufford, 54, was beheaded and another woman, 43-year-old Traci Johnson, was stabbed. Both victims were employees of Vaughan Foods, but according to Lewis, it appeared the women were not targeted and were instead stabbed at random. Alton Nolen CBS AFFILIATE KWTV Mark Vaughn, an off-duty officer who also serves as chief operating officer of the business, shot Nolen as he was stabbing Johnson. Sgt. Lewis touted Vaughn as a hero Friday and said he saved Johnson's life. "It could have gotten a lot worse. This guy wasn't going to stop," said Lewis. Johnson and Nolen were still hospitalized Friday. According to Lewis, statements were made to investigators that Nolen had been trying to convince employees to convert to Islam. It is unclear whether this is why Nolen had been terminated from the business. Police were called about 4:15 p.m. to reports of a fight inside Vaughan Foods. Lewis says officers were told that there had been a stabbing and shooting. The FBI is involved in the investigation and is currently conducting a background investigation into Nolen, Lewis said.