The Cronulla Sharks are the latest club under the spotlight in a potential salary cap bombshell unfolding on Tuesday.
The top-eight club, which won its first premiership in 2016, is being investigated by the NRL's integrity unit for "suspicious payments dating back to 2015".
The Daily Telegraph's Phil Rothfield reported the amount involved "is around the $250,000 mark but could go higher once thousands of documents have been examined".
"Now they've taken our server, we don't know what they'll find," an anonymous Sharks official said.
Cronulla's new chief executive Barry Russell said that while he did find some "historical cap issues" after conducting a review, the club was cap compliant for the 2018 season.