"Police have been told a student was doing what appears to be a prank which involved a needle," Efe news quoted the New South Wales Police as saying.
"As a result, eight teenagers received a minor needle prick," it said.
The police would also be speaking to the teenager, who played the prank, as part of an ongoing inquiry into the incident.
(This story has not been edited by Social News XYZ staff and is auto-generated from a syndicated feed.)
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