Published Monday, 30 January 2012
Letters warning people in Newry that they must evacuate their homes next month f (© UTV)
Edwin Poots said the notices purport to contain his signature but were not issued by the Department of Health, Social Services and Public Safety.
The letters suggest that it will be necessary for people in the Co Down town to vacate their homes in mid-February in order to facilitate testing for radon - a naturally occurring radioactive gas.
In a statement, the department says recipients should contact the police immediately.
A spokesperson said: "Neither the minister nor the department have issued any such correspondence. Residents receiving these letters should report them to the PSNI for further investigation."
Radon gas seeps from the ground into all buildings to some extent.
Levels are generally low in Northern Ireland, but are raised slightly in parts of Newry and Mourne and the Banbridge area.
Local police said they are investigating the letters.
A statement said: "Police in Newry are aware of letters sent to two households in the local area. The letters claim to be from the DHSSPS, who say they have not issued such letters.
"If you receive a letter of this nature please contact police immediately."
The DHSSPS added that it has also informed the NI Environment Agency (NIEA) and the Environmental Health Department of Newry and Mourne District Council.