Three members of a British family have been beaten unconscious in an attack at a Thai tourist resort.
The holidaymakers, including a woman, were kicked and punched during an assault by a gang during celebrations for the Thai New Year, it is understood.
Six people are said to have been arrested in connection with the incident in the popular coastal destination of Hua Hin on April 13.
The Britons, who are understood to be middle-aged, were left needing hospital treatment and have since been released.
CCTV footage released by local police shows a brief argument before the attackers punch and kick the victims. A passerby who tries to intervene is also shown being attacked.
A contributor to the Hua Hin internet forum alleged that Thai youths had gathered on the street looking to start an argument.
They wrote: "Within 20 to 30 metres of leaving the bar the Thais were punching the 65-year-old lady in the face!! The elderly gentleman was down on the floor and their son was beaten very badly!!!
"At this point I caught up to the scene and pushed one of the youths away from the woman.
"I got severely punched and kicked for my troubles, but felt the need to protect this frail lady.
"The three of them are still hospitalised and I will need cosmetic dental work done."
Both men are shown in the footage to suffer blows to the face and body, and when the woman who was initially knocked flat out by a punch sits up, one attacker delivers a kick to her head.
The images show all three being beaten unconscious and left on the pavement as a large crowd watches the unfolding scene on the busy street.
According to the internet forum account: "Not one person (other than myself) came to aid these old folk and they ended up laid in the road bleeding."
The Songkran New Year celebrations are also known as the Water Festival, when Thai families splash water on each other as part of a religious ritual of renewal.
The British Embassy launched its SongkranSafe campaign ahead of the festivities and encouraged holidaymakers to take part while appreciating local customs and traditions.
In the past tourists have been arrested for breaching decency laws by taking part without wearing T-shirts.
A spokeswoman for the Foreign and Commonwealth Office (FCO) said: "Our staff have been in contact with the family to offer assistance and will remain in contact with the local authorities."
The FCO said they had no information on the condition of the three UK nationals following the attack.
Additional reporting by Press Association
