A British man has been killed in a jet ski crash two days into his honeymoon in Santorini, Greek police have said.
The man (39), who has not been named, is thought to have been rammed into by another apparently British jet skier.
He was picked up by coast guard crews, who ordered an emergency airlift to the nearby island of Crete.
The man died of severe head and chest injuries before arriving at hospital.
Greek authorities said the owner of the water sports rental was arrested along with a British man (29) - reportedly a friend of the groom.
He was detained at the airport.
Both of the accused are due to appear before a state prosecutor on the island of Naxos on Friday. Authorities have refused to disclose their details.
The coast guard there have launched an investigation into the deadly accident. They expect the British man to be charged with negligent homicide.
The UK Foreign Office are looking into the incident.