The incident happened last night.
An intruder was removed from the Love Island villa after a security breach.
The area of the house had to be deep cleaned before islanders were allowed to use it again, under the programme's strict COVID-19 guidelines.
It is understood the intruder did not come into contact with any of the contestants on the show.
A Love Island spokesperson said: "Last night a security breach was identified and an intruder was removed from the villa with immediate effect.
"The safety of both our islanders and our production crew remains our primary concern.
"As part of our stringent COVID-19 safety measures, the villa area that was trespassed has been fully deep cleaned before being made accessible again to the islanders and crew."
The news of the breach comes after a row broke out between islander Hugo Hammond and several of his fellow islanders.
Love Island continues tonight on Virgin Media One.
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