ST. JOHN, Ind. (AP) — Police officers swarmed a northwestern Indiana high school on a report of an active shooter that authorities say was a false alarm.

St. John Police Chief Steve Flores says no shots were fired and no gun was found after a room-by-room search of Lake Central High School on Wednesday.

Flores says a male student called 911 after hearing what he described as a bullet being chambered into a gun in a school restroom, prompting numerous police departments to rush to the school in St. John, about 40 miles southeast of downtown Chicago.

That student and another who was in the restroom were questioned and released from custody.

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