The United Nations has raised the death toll of a recent massacre in which dozens of older people and Vodou religious leaders were killed by a gang in Haiti.

The UN now says 207 people were killed in a slum neighbourhood of the capital, Port-au-Prince, earlier this month.

At least 207 people were killed by members of the Wharf Jeremie gang in Haiti's portside neighborhood of Cite Soleil earlier this month, the United Nations said in a report on Monday, revising up a death toll it initially estimated at 187.

A massacre of more than 200 people in Haiti this month followed a gang-ordered manhunt that saw victims, many of them elderly, pulled from their homes and shot or killed with machetes, the UN said Monday.

The U.N. Integrated Office in Haiti said in a report that more than 207 people were killed by the Wharf Jeremie gang. The gang took people from their homes and from a place of worship, interrogated them and then executed them with bullets and machetes.