The mayor of Canada's capital Ottawa has declared a state of emergency in response to more than a week of truckers' protests against Covid restrictions.
Jim Watson said the city was "completely out of control", with demonstrators outnumbering police.
He said the protests posed a threat to residents' safety. There have also been reports of racial attacks.
Ottawa's centre has been paralysed, with vehicles and tents blocking roads.
The "Freedom Convoy" was sparked by the introduction last month of a new rule that all truckers must be vaccinated to cross the US-Canada border, but the protests have morphed into broader challenges to Covid health restrictions.
The protesters have since gathered in downtown Ottawa near Parliament Hill, and their demands have grown to include ending all such mandates nationwide and opposing the government of Prime Minister Justin Trudeau.