Waikato Police are investigating an aggravated robbery at a service station in Ngāruawāhia overnight.

At around 12.55am on Friday, July 25 a vehicle arrived at the service station on Great South Rd. A group of four offenders exited the vehicle and smashed their way into the premises.

A staff member was inside the store and activated the fog cannons before making themselves safe in the rear of the store. They were uninjured and are being offered support.

The group took a number of items from the store before fleeing in a stolen Nissan Navara ute, last seen heading south along Great South Rd. The ute was reported stolen from Hamilton overnight on July 23-24.

Police are investigating and would like to hear from anyone who may have seen the ute or have any information on this offending.

Anyone with information can contact Police on 105 quoting file number 250725/9859.

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