The Iowa hog farmer being grilled by federal agents about the disappearance of college student Mollie Tibbetts said he has “no idea” who she is — but suspects “some guy has her,” according to a report.

An FBI agent spoke to Wayne Cheney for about 10 minutes on Friday afternoon, Fox News reported.

Afterwards, Cheney insisted that he has “nothing to hide,” the outlet reported. He did not provide any more details about the “guy” he mentioned.

Officials questioned Cheney– who has pleaded guilty to two unrelated stalking cases in 2009 and 2014 — for hours on Tuesday.

Then on Thursday, search teams scoured ditches near his farm after finding a possible clue related to her disappearance– a red shirt.

It wasn’t immediately clear if the clothing belonged to the Iowa University student. A co-worker at the daycare center where the 20-year-old worked told Fox News they wear red shirts.

That same day, officials asked him to take a polygraph test, which he declined, the outlet reported.

The feds are expected to return to his farm on Sunday with more questions, Cheney added.

Tibbetts vanished on July 18. She was last seen going for a run in Brooklyn, Iowa.

Cheney has not been charged in connection with Tibbetts’ disappearance.

Investigators have struggled to secure leads in the case.

A Crimestoppers reward for information climbed Friday to $220,000.