The French medical charity Doctors Without Borders/Médecins Sans Frontières said Wednesday that at least two patients at its Haiti hospital were executed and its staff violently attacked after one of its ambulances in Port-au-Prince was stopped on Monday by Haitian police officers and members of a vigilante group.

Doctors Without Borders, also known as Médecins Sans Frontières (MSF), said law enforcement officers stopped one of its ambulances as it was transporting three young people with gunshot wounds to an MSF hospital in the Haitian capital on Monday.

Doctors' charity Médecins Sans Frontières (MSF) says at least two of its patients have been killed in Haiti after police and vigilantes attacked their ambulance in the capital Port-au-Prince. The charity said its crews had been transporting three patients with gunshot wounds to a MSF hospital on Monday when they were stopped by authorities and forced to go instead to a public hospital.