A manhunt is underway in Belgium after an unknown suspect opened fire inside the Brussels Jewish Museum. Police are using the raw CCTV footage above to try to track down the gunman who killed four people at the museum before fleeing on foot.
In the video above, a man wearing a baseball hat low on his face walks into a hallway, where he pulls out a rifle and fires through a doorway into a crowded museum room.
The victims include two Israelis, one French citizen, and a Belgian museum employee.
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