The military initially said it opened fire because the vehicles were “advancing suspiciously” on nearby troops without headlights or emergency signals. An Israeli military official, speaking late Saturday on condition of anonymity in line with regulations, said that account was “mistaken.”

The footage shows the Red Crescent and Civil Defense teams driving slowly with their emergency vehicles’ lights flashing, logos visible, as they pulled up to help an ambulance that had come under fire earlier. The teams do not appear to be acting unusually or in a threatening manner as three medics emerge and head toward the stricken ambulance.