A British tourist suffered multiple head injuries after a brawl with another foreigner in a Pattaya bar early on Thursday.
The tourist was identified as Vadim Vinograndov, who carries a British passport.
A Pattaya City police volunteer said he was patrolling the Thap Phraya road in the Khao Phra Tamnak area when he spotted the injured tourist walking down the street with a blood-soaked shirt and with multiple head injuries.
The tourist waved at him to ask for help so he stopped to check, called police and coordinated with a team of rescuers to send him to Pattaya Hospital.
The volunteer said the tourist, who appeared drunk, said he had been in a brawl with another foreign tourist and fled to seek help after he was injured.