UEFA has opened disciplinary proceedings against Chelsea, who could face a partial stadium ban because of alleged anti-Semitic chants in their UEFA Europa League match against Vidi on December 13.
On Tuesday, UEFA announced that "disciplinary proceedings have been instigated against Chelsea" following an investigation.
Per Ed Malyonof The Independent, UEFA's Article 14 regulation dictates:
"If a club’s supporters engage in the behaviour that insults the human dignity of a person or group of persons on whatever grounds, including skin colour, race, religion or ethnic origin, the member association or club responsible is punished with a minimum of a partial stadium closure.