The house of Manchester United chief executive Ed Woodward has allegedly been attacked on Tuesday night.
As a result of the club's poor form on the pitch and lack of transfer activity during January, derogatory songs have been aimed at Woodward during the last two matches.
However, according to The Mirror, the negativity towards the club's board escalated when at least 20 people attacked the official's house.
The group, who were all wearing balaclavas, are said to have thrown flares at the property, while also spraying graffiti outside of the mansion.
United have commented on the incident, saying in a statement: "Manchester United football club have tonight been made aware of the incident outside the home of one of our employees.
"We know that the football world will unite behind us as we work with Greater Manchester Police to identify the perpetrators of this unwarranted attack.
"Anybody found guilty of a criminal offence, or found to be trespassing on this property, will be banned for life by the club and may face prosecution. Fans expressing opinion is one thing, criminal damage and intent to endanger life is another. There is simply no excuse for this."
As of yet, it is unclear whether Woodward or his family were present at the house.