The threats were posted after The St. Louis Post-Dispatch published an article citing experts who said concerns about radiation at the landfill in Bridgeton and nearby Coldwater Creek could be overblown, the paper reported (http://bit.ly/1TloIWN).

EPA spokesman Curtis Carey said the threats were posted by one person on the West Lake Landfill Community Advisory Group’s Facebook page ahead of the group’s meeting on Monday that representatives from the EPA, Army Corps of Engineers and Agency for Toxic Substances and Disease Registry had planned to attend.

Carey said one of them read: “Let’s put these murderers and bribe-takers in the ground.”

“When they saw the threat, all three agencies said that’s not acceptable. It’s too great a risk,” he said.

Carey said the person who posted the threat “has repeatedly spoken about violence” to the three agencies. The agency filed a complaint with its Office of Inspector General, which makes reports of such complaints to local law enforcement.

The Kirkwood Police Department didn’t immediately respond to a call Tuesday about whether it is investigating the matter.

The threats have been deleted and the page’s monitor, Dawn Chapman, posted Monday night that “no threatening remarks are allowed on this page. If threats are made you will be removed immediately.”

The EPA is expected to announce by the end of the year a remediation plan for the landfill. The Cold War-era nuclear waste was illegally dumped near the site decades ago.

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Information from: St. Louis Post-Dispatch, http://www.stltoday.com.