Update:

Investigating as terrorist incident.

Via NBC:

An airport police officer was stabbed Wednesday in a possible terror-related incident in Flint, Michigan, sources told NBC News.

The attacker allegedly shouted “Allah Akbar” before stabbing the officer, who was bleeding from the neck, sources and witnesses at Bishop International Airport said.

Michigan State Police tweeted that the officer was in critical condition and the FBI was leading the investigation.

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