CCTV footage from a hospital in the West Bank city of Jenin shows undercover Israeli forces, disguised as medical staff and Palestinian civilians, moving through a corridor.
They are thought to have entered a room and used weapons fitted with silencers to shoot three fighters that Hamas and Islamic Jihad, both armed groups, have claimed as their own.
The Palestinian Authority has confirmed that the three people were killed by Israeli forces at the Ibn Sina Hospital.
