A staff member died when a student opened fire at a school in Nevada, shooting several people before dying of a self-inflicted gunshot wound.
Two boys taken to a local hospital in a critical condition were also students at Sparks Middle School, Washoe County emergency manager Aaron Kenneston said.
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Emergency services were alerted to the crash at 3.50pm on Thursday, Sussex Police said.
WARNING: Some people may find some of the images in this report distressing.
Medical staff who helped during the Westminster terror attack have received a royal thanks for their life-saving efforts.