Inspectors were on the scene Monday at the Bluegrass Army Depot in Madison County after a chemical leak.
Depot officials confirmed over the weekend that Sarin, a toxic nerve agent, was found to be leaking from a storage igloo at the facility.
It's the same igloo that was the site of another leak last August. Officials say ever since that incident, the igloo has been continually filtered and monitored.
They say the leak poses no risk to the public.
Inspectors will try to figure out the best way to fix the problem.