A Norway-based crypto mining farm accused of making too much noise may have to suspend its operations due to regulatory problems.

Kryptovault, which operates facilities in several Norwegian cities, could be closed because it lacks the right permits, The Local reported Tuesday. Local officials say the facility “has been operating illegally,” though it’s not clear what certification the mine is required to have.

As a result, the local government may force Kryptovault to shut down its miners – at least temporarily. CEO Stig Myrseth told the paper that the company has applied for the missing permits, adding that the firm was told it had the appropriate permits when it first took over an old paper mill.

The facility draws as much as 40 megawatts of power to run 9,500 computers, and the fans used to cool the facility have sparked complaints over the last several months because of their noise level.

A nearby resident, Trond Gulestø, reportedly told another paper that “our summer has been ruined,” explaining that the farm generates noise “24 hours a day, 365 days a year.”

Last week, as previously reported, the noise level resulted in a bomb threat being made against the company. An anonymous letter stated that “if you are expanding crypto mining and filling the country with noise, then you will be sabotaging the peace. I am threatening to send you some explosives.”

Kryptovault is looking to invest in equipment to reduce the noise pollution it produces, according to The Local.

Norwegian flag image via Shutterstock