There is an increased police presence in Kensington Gardens and officers say they are assessing a number of discarded items.
As a precaution, some of the officers who have been deployed are wearing protective clothing which they say may cause concern to some.
Officers say they do not believe there to be any increased public safety risk at this stage, but are urging people to avoid the area while officers carry out their work.
There are cordons in place and there is no public access to the gardens and the surrounding area.
Counter Terrorism Policing London are aware of a video shared online overnight in which a group claim to have targeted the nearby Embassy of Israel with drones carrying dangerous substances.
The Met says it can confirm that the Embassy has not been attacked and officers 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.
They say they will provide further updates when we are able to.
