A suspected chemical explosion has injured one person in Auckland tonight.

Emergency Services are at a Royalty Rise property in Red Beach, where there were reports of a chemical explosion involving chlorine.

One person is "moderately injured", the Fire Service says.

"This is a reaction involving pool chemicals", Fire Service spokesman Jaron Phillips said.

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"The caller into us did say there was an explosion. It has generated fumes."

The 111 call was made about 6.20pm and four fire units are at the scene, including a hazardous materials team.

A "safe forward point" for emergency service workers has been set up at the corner of Royalty Rise and Albert Hall Drive.