An boat engine overheated at Mechanics Bay, Auckland, this morning, leading to a fire service call-out.

Emergency services were called to the Tamaki River about 10.30am after reports a boat was on fire.

A Fire and Emergency spokesman said crews were taken to the boat - still on the water - and found the vessel involved had had an overheated engine.

The spokesman said there may have a been some smoke as a result, but crews were stood down by about 11am.

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