A Virginia high school released students early Wednesday after the building was evacuated due to what officials described as an "incident" inside a chemistry classroom.
The unspecified incident happened at Dinwiddie High School and was confined to a chemistry class, Dinwiddie County Public Schools wrote in a Facebook post.
First responders, including police and at least two ambulances, were seen outside the school around 11 a.m., according to WRIC-TV.
The district said that students were dismissed at 11:15 a.m. and asked parents who normally pick up their children to do so.
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Police are investigating the situation.
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No further details were immediately available.
This is a breaking story and will be updated as events warrant.