Eight people including an Irish missionary and a 3-year-old child remained missing Monday after gunmen stormed an orphanage in Haiti, the latest attack in an area controlled by a powerful collection of armed gangs.

Gena Heraty and a three-year-old child were taken in the middle of the night in a "planned act", officials say.

The abductees, including an Irish missionary who directs care for children with special needs, were taken from an orphanage serving about 270 children.