Police have carried out a pre-planned search warrant at the Mongols MC's South Island headquarters this morning.
State Highway 1 was closed from Burnham Rd to Dunns Crossing Rd while it was executed.
The road was re-opened at about 10.30am.
It appeared the search was being conducted at the headquarters, on Main Rd South in Burnham.
AdvertisementAdvertise with NZME.
A police spokesperson said they could not give any further information on the search.