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 claimed staff were tear-gassed, threatened, and prevented from treating patients in a violent encounter with police.

Attack on MSF personnel, patients calls the organization’s ability to deliver care into question, says the head of the organization’s mission in Haiti

Law enforcement officers and a vigilante group attacked a Doctors Without Borders ambulance amid a broader crisis of violence plaguing Haiti.

Staff say they were violently attacked on Monday after ‘members of a vigilante group and law enforcement officers’ stopped the ambulance

Two wounded patients were killed after police officers and vigilantes attacked an ambulance in Haiti on Monday, according to humanitarian group Doctors Without Borders.

The charity says its ambulance was attacked and patients and crew ambushed by Haiti officers.