Editor’s Note: This post was updated at 19:25  on 11/12 to reflect new information about the number of American service members killed. 

Between seven peacekeepers, including five Americans, were killed today when a Multinational Force and Observers (MFO) UH-60 Black Hawk helicopter crashed during a routine reconnaissance mission in Egypt’s Sinai Peninsula. A French and a Czech member of the force, Sgt. Maj. Michaela Ticha, were also killed. One additional American service member was critically injured.

The chief of the Czech army’s general staff, Gen. Ales Opata, expressed his condolences.

The names of the American dead have not been released yet, pending notification of their families. A ninth peacekeeper, believed to be American, was severely injured.