Michele ‘Mitch’ Agnelli, 81, denied committing the offence in October 2024. He was found guilty after a trial which lasted more than two days.
The court was told that Agnelli had entered a room to find the two young people involved in sexual activity. Naked, he too had got involved.
The defendant denied the allegation. He admitted that he had entered the room but then said he had apologised and left.
The court also heard that no complaint had been made until several months later. After deliberating, the jurats found Agnelli guilty by a 7-2 majority verdict.
He will be sentenced in January and in the meantime was granted bail on the conditions that he should not attempt to contact the victim nor leave the island.