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Here are the latest stages on the Mississippi River at Natchez and Vicksburg as of Wednesday morning.
The Nuclear Regulatory Commission is investigating a radioactive release into the Mississippi River from the Grand Gulf Nuclear Plant in Port Gibson.

A spokesperson from Grand Gulf tells News Channel 12 that they found standing water in an abandoned unit.

In an effort to remove the standing water, Entergy began pumping the water out and into a drain that emptyed into the Mississippi River.

A censor went off detecting the chemical "tritium" in the standing water.

NRC officials say the River has diluted the radioactive material and is not causing harm to the people.

Right now the incident is under investigation by the NRC.

Entergy officials tell News Channel 12 they are not sure of the source of the tritium.

There's no word on how much Tritum was pumped into the river.