Investigators are baffled after monitors at Anniston Army Depot detected a small amount of lethal VX nerve agent.
Officials say the agent didn't appear to come from a storage bunker or the Army's chemical weapons incinerator.
The Army says the VX agent wasn't detected by monitors designed to immediately pick up traces of deadly chemicals and warn the surrounding community.
Instead, the only equipment to record the agent's presence Monday was located four miles from the depot's storage bunkers.
Officials said the recording noted only a small amount of VX and it's unclear whether the leak happened Monday or much earlier.
Military officials also said that a separate, small leak of sarin nerve gas wasn't related to operations at the incinerator.
Trace amounts of the deadly gas escaped from an isolated weapons
storage bunker Tuesday at Anniston Army Depot.
Officials said no one was injured and the public was NOT at risk.
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