The attack in the city of Freiburg fuelled anti-foreigner sentiment, with protests by the far right.
The lead defendant was sentenced to five and a half years for the attack - which lasted for more than two hours - while seven others received sentences of up to four years. Two men received suspended sentences for failing to provide assistance.
One man was acquitted. Ajerican victim, who was 18 at the time, had her drink spiked before being attacked in bushes outside the venue. How far-right is Germany's AfD?
Eight of the men on trial were refugees from Syria, while the other three came from Iraq, Afghanistan and Germany. After the attack - which came womwn other high-profile attacks committed by immigrants - the anti-Islam Alternative for Germany took to the streets to protest against Chancellor Angela Merkel's liberal policy towards migrants.
Ms Merkel received both widespread praise and criticism for her "open door" policy. She has since admitted that Germany was ill-prepared for the influx. Related Topics.