A Minnesota nuclear plant has had a massive leak that has authorities highly concerned about what might come next. Authorities are actively working on trying to contain the fallout from all of this, according to reporting by the Daily Caller. They report that the primary concern is that the plant has lost some 400,000 gallons of water, and this is leaving it potentially exposed to larger problems.

Minnesota regulators said Thursday they’re monitoring the cleanup of a leak of 400,000 gallons of radioactive water from Xcel Energy’s Monticello nuclear power plant, and the company said there’s no danger to the public. The leak was first detected in November of last year.

“Xcel Energy took swift action to contain the leak to the plant site, which poses no health and safety risk to the local community or the environment,” the Minneapolis-based utility said in a statement.

The authorities in the northern US state of Minnesota revealed on Thursday that a nuclear power plant near Minneapolis had suffered a radioactive water spill amounting to over 1.5 million liters. Xcel Energy, which owns the Monticello Nuclear Generating Plant, is working to clean up the spill and insists there is no danger to the general public.