Police officers gather at a terminal at Bishop International Airport, Wednesday morning, June 21, 2017, in Flint, Mich. Dominic Adams—AP
12:59 PM ET
(FLINT, Mich.) — Officials on Wednesday evacuated an airport in Flint, Michigan, where a witness said he saw an officer bleeding from his neck and a knife nearby on the ground.
On Twitter, Michigan State Police say the officer is in critical condition and the FBI was leading the investigation.
Bishop International Airport posted on Facebook that passengers were safe and were being told to check for flight delays or cancellations.
Ken Brown tells The Flint Journal he was dropping off his daughter at the airport and saw the officer bleeding from his neck. He says he saw a man detained by police and a knife on the ground.
"The cop was on his hands and knees bleeding from his neck," Brown said. "I said they need to get him a towel."
Cherie Carpenter, who was awaiting a flight to Texas to see her new grandchild, tells Flint TV station WJRT she saw the attacker being led away in handcuffs. She described the man in custody as appearing "blank, just totally blank."
Flint officials say they have stationed police officers around City Hall out of caution. Mayor Karen Weaver said in a release Wednesday "the situation is under control" but officials sought to take "extra precautions" in light of the Wednesday morning incident at Bishop International Airport. The municipal building remains open.
Airport and police officials didn't immediately respond to messages from The Associated Press seeking comment.
Flint is about 50 miles northwest of Detroit.