Police in Alberta say 11 people have been arrested and weapons have been seized at the Coutts border blockade.
RCMP say they became aware of a small organized group within the protest and they learned they had access to a cache of firearms with a large amount of ammunition.
The group was said to have a willingness to use force against the police if any attempts were made to disrupt the blockade.
Officers used a search warrant early Monday morning to go into three trailers the group had where weapons, including 13 long guns, hand guns and multiple sets of body armour were found.
***With files from Casey Kenny