Britain sanctioned Haitian gang leader Jimmy Cherizier, saying he committed “serious human rights abuses,” according to the government website on Wednesday.

The government imposed an asset freeze and travel ban on Cherizier, the leader of the so-called G9 alliance of Haitian gangs, saying he had engaged in acts that “threaten the peace, security, and stability of Haiti”.

The government’s sanctions list called him “one of Haiti’s most influential gang leaders”.

Hundreds of people have been killed this year due to turf battles in Haiti, which has around 200 gangs of varying size that have become the de facto authorities in large parts of the capital Port-au-Prince.

The Canadian government took similar action last month as its foreign office said Cherizier’s acts were causing a humanitarian crisis in the Caribbean nation.

The United States, along with Canada, also sanctioned two Haitian politicians, including the president of the country’s Senate, in November over what the Canadian government described as their operational support for armed gangs.