April 17 (UPI) -- London police closed down Kensington Gardens Friday after a video was shared online by a group making a threat against the Embassy of Israel.

In the video shared overnight, Harakat Ashab al-Yamin al-Islamia, a group with ties to Iran, said it was going to attack the embassy with drones carrying dangerous substances. London Metropolitan Police closed off the Kensington Gardens area across from the embassy and are investigating "a number of discarded items."

"While we can confirm that the embassy has not been attacked, we are carrying out urgent enquiries to determine the authenticity of the video and to identify any potential link between it and the items discarded in Kensington Gardens," the Met said in a statement. "We will provide further updates when we are able to."

London Fire Brigade and the London Ambulance Service's hazardous area response team were also on the scene earlier in the day.

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