Six men have been jailed in Berlin for beating a 20-year-old Thai-German student to death.
The victim, known only as Jonny K, was killed on a night out in October 2012 as he tried to help a friend who was being attacked .
He was punched and stamped on as he lay on the ground and later died from a brain haemorrhage.
The high profile case has sparked a debate about street violence in Germany.
Following her brother’s death, Jonny’s sister Tina has publicly campaigned against street violence. She has also appealed to the attackers to acknowledge what they did.
“In the end no-one knows who did it. And the only people who know who hit and who beat up Jonny, are these six boys. I hope that one day when they are adult and grown up, one of them will say: Yes I did it. Only then will I know that he recognises what he did,” Tina said.
The six men, all aged between 19 and 25, were given sentences of between eight months and four and a half years.
Hundreds of people, including Berlin’s mayor, attended Jonny’s memorial service.