A stunned principal at a Canterbury school says she felt sick when a teen student sparked an international police drama by threatening to shoot everyone at his school.
The Year 9 student at Rangiora High left a note on his fake Facebook profile on Thursday, initiating a frantic response from police in Texas, US.
A mum in North Carolina alerted US authorities after her stepson saw the threat on the internet.
The boy wrote about being bullied, claimed he was burning inside with violence and said: "I shell (sic) go to school and shoot everyone in sight".
Police took the threat seriously as the message said the boy lived in "Mt Heaven, Texas" - similar to the town of Mt Haven in the same state.