A body language expert thinks an Iowa hog farmer shows signs of increased anxiety during an interview with local media after the FBI questioned him in connection with the disappearance of 20-year-old University of Iowa student, Mollie Tibbetts.

Susan Constantine, a psychologist body language expert and the author of “The Complete Idiot’s Guide to Reading Body Language,” spoke with Nancy Grace on Sunday, and described how she thought 56-year-old Wayne Cheney, who lives around 15 miles from the area Mollie disappeared from, seemed to only be concerned for himself while he spoke to local Iowa station, WHO13.

“If you listen to him when he’s talking, he’s talking about how it’s affecting himself,” Constantine said. “He’s not at all concerned about what happened to the victim.”

Constantine also touched on Cheney’s body language during the interview, which to her, seemed to be movements of deception.

“He has this increased anxiety, which is causing all these physiological responses of itching the ears to adjusting his glasses, to stroking his hair, to, you know, crossing his arms and uncrossing them. So what happens is that, when you’re under anxiety, it increases blood flow and causes irritation to his capillaries. Those are all deceptive indicators.”

Although authorities have questioned Cheney several times, they have not named him as a suspect in Mollie’s disappearance.

As CrimeOnline previously reported, the first round of questioning for hog farmer Cheney, of Deep River, occurred on July 26, days before authorities searched an area close to a hog farm between Guernsey and Deep River on Thursday.

“I don’t know who those two were but they took me down to the fire station Tuesday and questioned me for two hours,” Cheney told WHO13. “I don’t remember what they asked me.”

Cheney was referring to investigators who arrived at his doorstep and questioned him about the disappearance of Mollie. According to court documents, Cheney has at least two stalking charges on his record, one of which resulted in a protective order against him.

“I just thought it was a waste of time but oh well,” Cheney retorted.

After investigators took Cheney to local fire station to question him, they searched his cellphone, garage, and his home, according to FOX.

On August 3, an FBI agent showed up on the doorstep Wayne Cheney’s Deep River home again. The agent stayed around 10 minutes before leaving, but it’s still unclear what was discussed.

Cheney later told a FOX News reporter that he didn’t want to discuss the incident but said he thought “some guy” had her. He also reportedly said authorities asked him to take a lie detector test on Thursday but he refused.

Cheney indicated that the FBI agent said he would return on Sunday to question him further.

Cheney said he doesn’t know Mollie and doesn’t know anyone in her family, and didn’t have anything to do with her involvement. Authorities have not named him as a suspect in the case.

Check back with CrimeOnline as additional details become available.

Timeline of Mollie’s disappearance

July 16-17

Mollie’s boyfriend saw her for the last time on July 16, before leaving town to work at a Dubuque construction site with his brother, around 100 miles away from Brooklyn.

On July 17, Dalton and his brother, who lives with him, drove to work. Mollie agreed to dog-sit while he was gone.

At around 5:30 p.m. on July 17, Mollie’s brother, Jake Tibbetts, who shares a car with her, dropped her off at Dalton’s home. Mollie stayed alone while watching the dogs.

July 18

Investigators report another neighbor reported Mollie out for a jog at around 7:30 p.m. on July 18.

Mollie had plans to go to her mother’s house for dinner on the evening on July 18. She never showed up.

At 10 p.m. on July 18, Dalton opened the SnapChat message from Mollie. He said it looked like she took the photo while indoors. It’s unclear when Mollie took the picture but detectives think she took it at some point on Wednesday.

July 19

Jake Tibbetts, who has been cleared as a suspect, sends Mollie a text message at 7:30 a.m., asking if she needed the car for work. The text message was not read.

Dalton sends Mollie a text message, wishing her a good morning. Mollie does not read the text message.

Mollie’s mother, Laura Calderwood, sends Mollie several text messages throughout the afternoon. All text messages remain unanswered.

Jake Tibbetts calls Laura Calderwood and says Mollie never made it to work at a daycare center. Laura calls the police.

July 20

The Facebook group, “Finding Mollie Tibbetts,” was created. It currently has over 40,000 members.

Hundreds of people show up in the Brooklyn area to search for Mollie.

The Poweshiek County Sheriff’s Office announces that tips should directed to its office.

The University of Iowa released a statement on Twitter that the school is also monitoring the incident and looking for any helpful information.

July 22

Authorities announce Mollie is still missing and that nothing was found during the searches.

July 23

Dalton tells ABC he’s optimistic about Mollie’s return.

Laura Calderwood says her daughter is an “outgoing, fun, loving life, loving person.”

Poweshiek County Sheriff Thomas Kriegel announces that no one from the “tight-knit” community in Brooklyn has been missing this long.

July 25

Investigators continue to follow up with tips and leads.

The family spreads the search even further by distributing flyers across the state.

Kriegel indicates Mollie could have possibly been abducted.

July 26

Investigators search two hog farms after following up on tips, but the searches yield no results.

Wayne Cheney is questioned by the FBI.

Authorities search Cheney’s home and cellphone.

July 27

Iowa Department of Public Safety released a statement announcing that there are still no suspects but authorities will continue to pursue leads and investigate.

A neighbor tells a local media outlet that he spotted Mollie “walking nonchalantly” down the street.

August 2

As authorities searched an area close to the Lincoln Wildfire Reserve in Brooklyn, Iowa, someone mowing their lawn nearby discovered a red a shirt.

The shirt was turned over to the FBI for evidence processing.

FBI reportedly asked Cheney to take a lie detector test. He refused.

August 3

An FBI agent goes to Cheney’s house for a second round of questioning.

Mollie has long brown hair and brown eyes, weighs around 120 pounds and stands 5-feet-2 inches tall. She was last seen wearing running shoes, a pink sports bra, and dark running shorts.

Anyone with any information is urged to contact Crime Stoppers at 800-452-1111.

[Feature Photo: Mollie Tibbetts/Handout]