Activists poured 300 litres of a blood-red coloured biodegradable dye into an ornamental pond outside the US embassy in London, to draw attention to Washington’s arming of Israel amid the war on Gaza, Al Jazeera reports.

The Greenpeace activists turned the embassy’s pond into a lake of symbolic blood, using a container to dispense the dye bearing the words: “Stop Arming Israel”.

Will McCallum, Greenpeace UK’s co-executive director, was among five people arrested on suspicion of conspiracy to cause criminal damage, the activist group and police said.