Israel Adesanya had a very bad weekend, losing his UFC middleweight belt to persistent foe Alex Pereira. It got worse on his way home.

The ex-UFC champion was arrested John F. Kennedy International Airport in New York City after attempting to go through security with a set of brass knuckles, according to MMA Fighting. Port Authority police reportedly detained him at 1:57 p.m. ET on Wednesday.

Brass knuckles are illegal in the state of New York, with possession considered a misdemeanor.

Adesanya's manager, Tim Simpson of Paradigm Sports Management, later released a statement claiming the knuckles had been an unsolicited gift from a fan that Adesanya put in his luggage, and added that the New Zealander has already been released:

“Israel was handed a gift by a fan, which he put in his luggage. When flagged at the airport, Israel quickly disposed of the item, and cooperated with authorities. He has complied accordingly, with that the matter was dismissed and he is on his way home.”