A bomb threat was sent to a Norwegian cryptocurrency mining company for “sabotaging the peace” with noise this past Saturday.

Kryptovault, a crypto mining firm with facilities in a number of cities in Norway, reported receiving threats after a local paper reported on its work, according to Yahoo Finance.

The bomb threat said “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,” according to the report.

Kryptovault managing director Gjermund Hagesaeter said the anonymous notice was immediately sent to local authorities, who are “taking the whole issue very seriously indeed.”

Noise complaints over the sound level of mining operations from local residents has been a reoccurring issue for Kryptovault. Back in June, Vakdalposten newspaper reported that the company hosted consultation meetings with neighbors in the city of Dale as an attempt to remedy ongoing frustrations.

However, given the recent turn of events, new assessments are being drawn on the course action needed to be taken to ensure the safety of both Kryptovault facilities and employees.

In fact, speaking with Yahoo Finance, Hagesaeter revealed that among their three cities of operation, “Dale is far more accessible” to potential intruders. As a result, employees in the city have been warned to “be on their toes” in case of any abnormal activity moving forward.

Mining is becoming an increasingly lucrative activity for private businesses around the world given increased consumer demand for crypto assets such as bitcoin. At the same time, the activity requires a host of energy-intensive computations consuming large amounts of electricity, that some propose only incentivize the need for sustainable energy solutions.

Alarm image via Shutterstock