One person has been critically injured after they suffered an electric shock during a workplace incident in Auckland's Massey.
Police attended the incident at Alidade Place about 8.45am on Tuesday.
The victim was taken to hospital in a critical condition and a second person was treated at the scene.
St John said three vehicles attended the incident and transported one person to Auckland Hospital.
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A photographer at the scene said Alidade Place was cordoned off by police tape while they conducted an investigation.
The matter will be referred to WorkSafe.