Relatives of Monitha Silney, 12, who died of cholera, mourn during her burial at the cemetery in the Cite Soleil slum in Port-au-Prince, Haiti, Sunday. (Ramon Espinosa/Associated Press)

The acting UN humanitarian chief in Haiti says the cholera outbreak is increasingly becoming a national security issue amid local protests.

Nigel Fisher told reporters at UN headquarters, via teleconference from Port-au-Prince, on Monday that there had been several protests around the cholera outbreak.

Fisher had no details about an especially large protest that erupted earlier in the day in Cap-Haitien, the country's second-largest city. Protesters there are blaming Nepalese UN peacekeepers for the outbreak.

Fisher also said the United Nations is working with Haitian officials to ensure health precautions are taken so that Nov. 28 presidential elections can proceed as scheduled.