Hawke's Bay Regional Prison's mystery powder still to be identified

Hawke's Bay Regional Prison is investigating the discovery of a white powdery substance. Photo File

Hawke's Bay Regional Prison management are still clueless to what the white powder is, after they discovered it in the incoming mail yesterday.

A corrections spokesperson said prison management are still investigating the incident and the powder has not been identified yet.

"The site's administration building and surrounding areas remain isolated as a safety precaution until the powder is identified."

He said the rest of the site continues to operate as normal.