Authorities drilled through concrete and removed two samples of wet soil and clay in a modest Detroit-area neighborhood Friday in the latest effort to find the remains of Teamsters boss Jimmy Hoffa, who disappeared in 1975.
There was no visible sign of human remains, but test results could be ready by Monday, Roseville Police Chief James Berlin said.
"We're not sure if anything is down there. That's what this is all about," Berlin said.
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