"The guy got to within about 10 to 12ft of where Rihanna was sitting before he was apprehended by security. He looked fairly harmless but it was a little too close for comfort," thesun.co.uk quoted a source as saying.
The man is said to have travelled to the Caribbean island specifically to try to meet the star. Wearing just shorts he had reached the 10-bedroom villa by swimming on to a beach at the back.
The man was arrested, quizzed and discharged later.