We warned earlier in the week about the threat of “soft target” terrorist attacks by organized terror cells sweeping over our undefended southern border. What we forgot to mention in that missive is the threat of Islamic converts on our own shores, who seem every bit as zealous and dangerous.

Yesterday a Muslim convert fired by food processor Vaughn Foods in Moore, Oklahoma, rampaged with a knife after his termination. He beheaded one female co-worker, and was stabbed another before being put down by shots fired by a off-duty deputy.

Officials with the Moore Police Department say the FBI is now involved in the investigation related to a brutal attack of workers at a food distribution plant.

Sgt. Jeremy Lewis says the alleged suspect, 30-year-old Alton Nolen had just been fired when he drove to the front of the business, hit a vehicle and walked inside.

He walked into the front office area where he met 54-year-old Colleen Hufford and began attacking her with a knife.

Sgt. Lewis confirms the type of knife used in the attack is the same kind used at the plant.

Lewis confirms that Hufford was stabbed several times and that Nolen “severed her head.”

At that point, Lewis claims Nolen met 43-year-old Traci Johnson and began attacking her with the same knife.

Officials say at that point, Mark Vaughan, an Oklahoma County reserve deputy and a former CEO of the business, shot him as he was actively stabbing Johnson.

“He’s a hero in this situation,” Sgt. Lewis said, referring to Vaughan. “It could have gotten a lot worse.”

Authorities say that Vaughn shot Nolen with a rifle. It remains unclear what kind of rifle it was, but the trio of shots fired in a short amount of time to subdue Nolen suggests it was a semi-automatic, and was perhaps even an AR-15 with a 30-magazine clip.

Nolen has an extensive criminal record, which includes multiple drug arrests, escape, and assault and battery on a police officer.

He did not apparently know his victims.

There were up to 300 workers inside the facility at the time of the attack.