Covid cases in Waikato aren't likely to stop Auckland moving to Level Three.

Three household contacts of a person released from Mt Eden Prison have tested positive including a child who attended Mangatangi School while infectious on Thursday.

The news comes hours before Cabinet is due to meet to confirm whether Auckland moves to Level Three tomorrow night.

Deputy Prime Minister Grant Robertson says told Mike Hosking while it's an emerging situation, he has some confidence the situation is contained.

“The focus for us to whether or not we feel confident that we’ve got this outbreak under control albeit with cases emerging out of those households, so more information will emerge on the Waikato case through the day, I’m sure.”