A student at Michigan State University woke up to find a staple attached to his gums after what he claimed was an antisemitic attack.
Second-year journalism student Zachary Tennen was assaulted at a party in the early hours of Sunday morning, allegedly after replying in the affirmative when asked if he was Jewish.
The 19-year-old had his jaw broken, was knocked unconscious and came round to find a staple protruding through his gums.
However, police in Michigan said there was not enough evidence to label the attack a hate crime.
While the Detroit Free Press quoted Mr Tennen’s mother saying that the attackers raised their arms in a Nazi salute and chanted “Heil Hitler”, police say that two witnesses cannot confirm the claims.
Michigan State University released a statement saying: “Michigan State University has reached out to the family of the student to provide the academic and other support the student needs.”
Mr Tennen has since undergone corrective surgery on his jaw.