The Boulder police tweeted there is an “Active Shooter at the King Soopers on Table Mesa. AVOID THE AREA.”
It was unclear whether the man was involved in the reported active shooting inside the store.
Ambulances and multiple law enforcement agencies are currently outside the store.
The supermarket is part of a large shopping center with a two-story strip mall next door.
King Soopers is a supermarket brand of Kroger in the Rocky Mountain area of the United States.
Aerial video from the scene showed a massive police response and at least six ambulances.
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