A previous raid at the Mongols MC's headquarters in Burnham. Photo: Geoff Sloan
A police spokesperson said officers carried out a pre-planned search warrant at the location on State Highway 1 in Burnham.
The NZ Transport Agency said at 7am SH1 was closed for a time between Burnham Rd and Dunns Crossing Rd "due to a police incident".
In an update at 8.35am, NZTA said the incident was resolved and SH1 was now open.
The Mongols Motorcycle Club headquarters is located in the area.
Motorists should expect delays and follow the directions of traffic management staff in the area, NZTA said.
