Israel has released a video said to show the Hamas leader Yahya Sinwar entering a Gaza tunnel and stocking up with supplies on the night before the Oct 7 attacks.

The clip dated late on Oct 6 shows Sinwar walk back and forth up a narrow concrete tunnel, ferrying water bottles, bedding and supplies, accompanied by a small boy.

The video was recovered from Gaza several months ago and showed him hiding away in preparation for Israel’s retaliation after the attack, according to the Israel Defense Forces.

Rear Adm Daniel Hagari, spokesman for the military, said: “Even on the eve before the brutal massacre, Sinwar was busy with his survival and the survival of his family.

“A few hours before the massacre, Sinwar and his family escaped alone to the tunnel. They equipped themselves with food, water, pillows, a television and other supplies for a long stay.

“Hours before the massacre, Sinwar only cared about himself and his family while he sent terrorists for the brutal attack.”