THE United Nations security council was evaluating options including the immediate activation of foreign troops to help Haitian police fight off gangs that have caused a scarcity of fuel, water and other basic supplies.

Such a force would “remove the threat posed by armed gangs and provide immediate protection to critical infrastructure and services,” as well as secure the “free movement of water, fuel, food and medical supplies from main ports and airports to communities and health care facilities,” according to a letter UN secretary-general Antonio Guterres submitted to the council on Sunday.

The letter, which has not been made public, said one or several member states would deploy the force to help Haiti’s national police.

It also states the secretary-general may deploy “additional UN capacities to support a ceasefire or humanitarian arrangements.”

However, the letter notes that “a return to a more robust United Nations engagement in the form of peacekeeping remains a last resort if no decisive action is urgently taken by the international community in line with the outlined options and national law enforcement capacity proves unable to reverse the deteriorating security situation.”

The letter was submitted after Haiti Prime Minister Ariel Henry and 18 high-ranking officials requested from international partners “the immediate deployment of a specialised armed force, in sufficient quantity,” to stop the “criminal actions” of armed gangs across the country.

The request comes nearly a month after one of Haiti’s most powerful gangs seized control of a key fuel terminal in the capital of Port-au-Prince, as tens of thousands of protesters demand Mr Henry resigns.

The deepening paralysis has caused supplies of fuel, water and other basic goods to dwindle amid a cholera outbreak that has killed several people and sickened dozens of others, with health officials warning that the situation could worsen.

On Sunday, Haitian senators signed a document demanding that Mr Henry’s “de facto government” defer its request for deployment of foreign troops, saying it is illegal under local laws.

A spokesman for Mr Henry could not be immediately reached for comment.

Haitian officials have not specified what kind of armed forces they’re seeking, with many local leaders rejecting the idea of UN peacekeepers, noting that they’ve been accused of sexual assault and of sparking a cholera epidemic that killed nearly 10,000 people during their a 13-year mission in Haiti that ended five years ago.

The letter that the UN secretary-general submitted on Sunday suggests that the rapid action force be phased out as Haitian police regain control of infrastructure, and that two options could follow: member states establish an international police task force to help and advise local officers or create a special force to help tackle gangs “including through joint strike, isolation and containment operations across the country.”

The letter notes that if member states do not “step forward with bilateral support and financing,” the UN operation may be an alternative.

“However, as indicated, a return to UN peacekeeping was not the preferred option of the authorities,” it states.

The letter also says the security council could decide to strengthen the police component of the current United Nations Integrated Office in Haiti known as BINUH, and to call on member states to provide additional equipment and training to local police, which are understaffed and lack resources.

Only about a third of some 13,000 are operational in a country of more than 11 million people.

The secretary-general said the issue is a matter of urgency, noting Haiti “is facing an outbreak of cholera amid a dramatic deterioration in security that has paralysed the country.”