A Hoffa-themed scam in Roseville, Michigan

ROSEVILLE, Mich. (AP) - Authorities say someone's trying to scam residents of a Detroit suburb into believing that missing Teamsters boss Jimmy Hoffa could be buried on their property.

Roseville police are warning city residents about a letter that purports to be from the Michigan Department of Environmental Quality. The letter says a recent dig at a Roseville home for Hoffa was a ruse to keep the media away from the real site.

The letter's author implies the true Hoffa dig site is at the recipient's home.

Several residents received a copy of the fake letter as a lure to get them outside while thieves go inside their homes.

Roseville police investigated a claim last month that Hoffa was buried in a backyard, but testing on soil samples showed no traces of human decomposition.