Officials are investigating a possible act of terrorism in Flint, Michigan, after a man reportedly pulled out a knife at an airport June 21, yelled "Allahu Akbar" and stabbed a police officer in the neck.
The suspect's identity has not yet been publicly released, but WEYI reports that he is Canadian-born. He has been arrested and questioned by authorities.
He reportedly cried "Allahu Akbar," which means "God is great" in Arabic and is frequently shouted by Islamist terrorists before attacks. The suspect then stabbed Police Lt. Jeff Neville multiple times.
"The cop was on his hands and knees bleeding from his neck," witness Ken Brown, who said he was dropping his daughter off at the airport when he saw a man near a knife on the ground, told MLive. "I said 'they need to get him a towel.'"
Neville was initially reported to be in critical condition, but Michigan State Police have since announced that he is stable.
The FBI said that they are investigating the stabbing as an "act of terrorism," notes CNN.
"The FBI, with our local, state and federal law enforcement partners, is jointly investigating this incident to determine the nature and motive for the attack," the bureau said in an earlier statement, according to WEYI. "We are aware of reports that the attacker made statements immediately prior to or while attacking the officer, but it is too early to determine the nature of these alleged statements or whether or not this was an act of terrorism."
The Bureau added that they "believe this to be an isolated incident" based on what they have learned so far, and "currently have no specific, credible information that there is a threat to the Flint community."
No passengers were harmed, but police blocked off all entrances to the airfield and sent in police dogs, notes MLive. The airport has since been closed down, notes CNN.
In a statement, the Canadian government condemned what they called a "heinous and cowardly act," according to MLive.
"Our thoughts and sympathies are with the officer and his loved ones," they added. "Our government and law enforcement agencies are engaged and are cooperating fully with our American counterparts and assisting them in every way possible."
Authorities believe that the suspect traveled between Canada and the U.S. several times, one American official told CNN.
President Donald Trump has reportedly been briefed on the attack but has not yet commented.
Republican Gov. Rick Snyder of Michigan and Flint Mayor Karen Weaver both issued statements offering "thoughts and prayers" to Neville.