Wednesday morning's incident at Bishop airport in Flint, Michigan, in which an airport officer was stabbed in the neck is being investigated as a possible act of terrorism according to Federal investigators.

Lieutenant Jeff Neville, who retired from the Genesee County Sheriff's Office, was stabbed in the neck and is listed in stable condition. Sources cited by ABC say Neville was at his post at the top of the escalators at Bishop when he was attacked from behind with a larger knife, similar to a Bowie knife.

The knife-yielding suspect is Canadian-born and shouted "Allahu Akbar" before stabbing the officer multiple law enforcement sources say. He was then taken into custody.

NBC News: Federal investigators are looking into the stabbing of a police officer at the Flint, MI airport as a possible act of terrorism. — Tom Winter (@Tom_Winter) June 21, 2017

NBC News: The Canadian born suspect shouted "Allahu Akbar" before stabbing the officer multiple law enforcement sources say. W/ @anblanx https://t.co/TYSZIgmFQE — Tom Winter (@Tom_Winter) June 21, 2017

After the attack, Bishop International Airport was evacuated and is closed. The airport released the following statement:

"All passengers are safe and are being evacuated at this time. Please check with your airline for potential cancellations or delays."

The FBI is leading the investigation. The Flint City Hall began operating under heightened security in an abundance of caution after the incident.

"Right now we are still awaiting more information about the situation at Bishop Airport this morning," Flint Mayor Karen Weaver said. "My thoughts and prayers are with all of our law enforcement officers who work to service and protect us each and every day. I want the public to know that several agencies are involved and working to ensure the situation is under control. However, at this time we are taking extra precautions just to be safe."