Eight men have been charged over the death of an American graduate found beaten on the Greek island of Zakynthos on July 7, local media report.
Bakari Henderson, 22, from Texas, was brutally attacked after leaving a bar following an argument, police said.
Six Serbian nationals, a 34-year-old Greek and a 32-year-old British national of Serbian origin were arrested after CCTV footage was released.
A seventh Serbian tourist is also being questioned, Greek news agency ANA reported.
“Always a peacemaker”
Mr Henderson suffered serious head injuries in the attack in the Laganas resort and was pronounced dead after being taken to hospital.
Witnesses reportedly told police he angered one of the bouncers when he and his friends tried to take a selfie with a waitress.
Footage later obtained by police shows Mr Henderson being attacked by a group of men outside a shop.
The suspects are accused of beating Mr. Henderson and leaving him unconscious in the street.
Police reportedly ruled out racism or nationalism as a motive for the attack.
Mr. Henderson’s friend Travis Jenkins earlier told ABC News that it wasn’t like him to get into a street fight.
“Bakari was not the type to act aggressively like that,” Mr. Jenkins said, adding: “He was always the one who was the peacemaker.”
Mr. Henderson graduated last month from the University of Arizona with a degree in corporate finance and entrepreneurship.
His family said they were “devastated” by his death.
“Bakari loved spending time with family and friends, traveling and meeting new people,” a family statement said.
“He was a big thinker and loved starting new businesses. Bakari was an inspiration to everyone he met.”
The recent graduate was in Greece to work on a photo shoot for a new clothing line, according to his family.
Mr Henderson’s family is working with the US State Department to recover his body as a GoFundMe page to help the family with the costs of “repatriating Bakari’s body and all funeral expenses” raised almost $60,000 (£46,000) of its $80,000 target.