The United Nations says that the U.S. has given notice that it is halting funding to a U.N.-backed mission in Haiti tasked with fighting gangs trying to seize full control of the country’s capital.

Heavily armed gangs in Haiti have attacked a neighborhood that’s home to most of the country’s elite and had been largely untouched by criminals

The U.S. government has ordered an immediate stop to its financial contribution to the Multinational Security Mission (MMS) for Haiti, a police support force led by Kenya that remains unformed due to funding shortages.