Brighton have sacked three members of their ground staff for allegedly leaking team information on social media.
The Daily Mail says the club launched a three-month investigation into the leaks which was said to include the confiscating of mobile phones and regular surprise interviews.
They concluded that three members of staff deserved to be dismissed.
The club's ground staff are represented by GMB Union, who have labelled the investigation "intrusive" and a "witch hunt".
In a statement, they said: "GMB represent the club's ground staff team and has accused the Premier League club of failing to follow any due employment processes or even a club investigatory and disciplinary process to wrongfully dismiss staff without a hearing or right to appeal.
"The sackings came after prolonged and intrusive investigations of all the ground staff working at the club's Lancing training facility.
"The investigation included the seizure of some mobile phones from staff to check and download content and usage, along with regular surprise interviews, all of which have been unable to provide any links about team selection leaks, to the members of staff wrongfully dismissed."