The search for Jimmy Hoffa’s remains in an Oakland Township field continued for a second day on Tuesday.
FBI agents have moved a lot of earth by digging in the area of Buelland Adams roads. But, the most important tools used in day two weren't shovels, they were snouts.
Cadaver dogs were brought in to see if human remains could be detected near the concrete slabs discovered in the field.
"I wouldn't call it a conclusive hit, the cadaver dogs worked the area and obviously reacted to some scent but we wouldn’t call it conclusive," said Oakland County Sheriff Michael Bouchard.
Bouchard says the scent was likely animal remains and not human. He says the search has not turned up Hoffa but it dose gives credibility to the tipster's story.
Reputed Mafia captain Tony Zerilli is that tipster, he told his lawyer that Hoffa was buried alive beneath a concrete slab in a barn in the field.
The barn no longer exists, but property records back up Zerilli’s claim that the land was owned by a former mafia boss.
"There is concrete back there and obviously that was part of the original information and it's consistent with that," said Bouchard.
Agents are expected to keep digging until Thursday -- unless something is found before then.
"If it's not there he (Zerilli) got misinformation from someone," said Zerilli's attorney David Chasnick. "But, what he is saying is 100 percent something he believes in, his conviction in more than 100 percent."
Zerilli was in prison when Hoffa disappeared but he says he was informed about the whereabouts of the Teamsters boss after his release.
Since Hoffa's disappearance in 1975, multiple leads to his remains have turned out to be red herrings.