A convoy of trucks protesting against the decision to vaccinate the truckers blocked the border crossing between America and Canada.
Authorities in the Canadian province of Alberta have sent armed, special police forces to break through the blockade of the border crossing with the US state of Montana.
Canadian truckers blocked the border crossing over the weekend as thousands of their colleagues continued on their way to the Canadian capital, Ottawa.
Surrounded by special units of the Royal Canadian Mounted Police, the truckers decided to open a lane for local traffic and release anyone wishing to leave, but remained adamant not to leave the border until the requirements were met.
According to Mayor Jim Willett, about 100 trucks blocked Highway 4 on the Canadian side, causing a mile-long column on the Montana Interstate.