Zachary Burkard admitted to shooting his South County High School classmates, Ersheen Elaiasher and Calvin Van Pelt, on April 25, during a fight over threats made on social media, the website said.
The jury in this trial was shown a video of Burkard using expletives in threats against one of the teens he killed, WUSA9 said.
Click here for the full story from WUSA9.
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