(CNN) -- A British man and woman were found dead on a beach on a popular resort island in Thailand, police said Monday.
The two victims were found on the island of Koh Tao, and police are investigating their deaths as murder, authorities said.
The victims had severe injuries to their heads, and a hoe with blood on it was found near the bodies, said Col. Prachum Ruangthong, police chief of Koh Phaghan, the precinct that has jurisdiction over the area.
A search of the victims' rooms showed no sign of theft, and interviews with friends indicated the victims may have only recently met while on the larger island of Koh Phangan before traveling to Koh Tao for a party excursion.

BBC.co.uk wrote:Thailand deaths: Tourists named as David Miller and Hannah Witheridge
David Miller and Hannah Witheridge
The pair were found close to the bungalows where they had been staying
Two British tourists have been killed in an attack on a beach in southern Thailand, local police have said.

David Miller, 24, from Jersey, and Hannah Witheridge, 23, from Norfolk, were attacked on Sunday night on the island of Koh Tao, Thai police said.

Their bodies were found with serious injuries in the early hours of Monday.

The UK Foreign Office said the British consul from Bangkok was travelling to the island, which is a popular tourist destination, "as soon as possible".

'Boats blocked'
The bodies were found close to the beach-side bungalows where the pair had been staying.

Jump media playerMedia player helpOut of media player. Press enter to return or tab to continue.
Footage showed police at the scene of the attack
Police said they wanted to speak to a man, possibly a friend of the victims, who is thought to have left the island on Monday morning.

They are also questioning tourists, and hotel and bar owners.

Boats were earlier blocked from leaving the island.

Both the victims had suffered serious injuries and a garden hoe, believed to have been used in the attack, was found nearby, police said.

They said they had yet to identify a motive or suspect in the killing of the tourists, who had arrived in Thailand last month.

Police have cordoned off the scene of the deaths of two British tourists in Koh Tao, Thailand
Police have cordoned off the scene
Officers have been reviewing closed circuit TV footage from nearby restaurants, hotels and shops.

There was a beach party on Sunday night, about 100 metres from where the bodies were found, according to local media.

Reports suggest that Ms Witheridge, who was originally from Great Yarmouth, and Mr Miller had met recently on the island.

"We are aware of the death of two British nationals on 15 September on the island of Koh Tao in the Gulf of Thailand," the UK Foreign Office said in a statement.

"The embassy are urgently seeking information from the local authorities and consular staff stand ready to provide assistance to friends and family at this tragic time."

Senior police adviser Pol Gen Jarumporn Suramanee said detectives were waiting for the results of DNA tests on samples collected from 30 people. They are either alien workers or staff of hotels and restaurants...

taranis wrote:

The BBC's Jonathan Head says Thai police suspect two different samples of DNA taken from Ms Witheridge's body are from two Asian men.

Police in Thailand has also said they are investigating new evidence suggesting the murders may have taken place because of "sexual jealousy".

"Police have been made aware of reports that Hannah and David had a fight in a bar with a Thai man before they were killed, but cannot confirm if they are true."

http://www.bbc.com/news/uk-29300765

I had one theory of a Thai man or men having a problem and losing face, would not be the first time.