Police in Iowa have ruled out the boyfriend ofMollie Tibbettsas a suspect in the University of Iowa sophomore’s disappearance, which authorities say appears increasingly likely was an abduction.

Jackaddressed his missing girlfriendin a recent interview with theDes Moines Register, saying, “I miss you so much and I love you.”

The search for the missing 20-year-old continues, says Mitch Mortvedt, a spokesman for the Iowa Division of Criminal Investigation.

According to Mortvedt, local, state and federal officers are following up on a number of leads. He confirmed that detectives were searching a pig farm in Guernsey on Thursday morning.

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Mortvedt says that no one has been taken into custody, and noted several searches were being conducted in and around the county.

“One avenue of thought is that if it wasn’t a struggle, and we have found no signs of a struggle, then maybe it was someone she was familiar with,” Mortvedt explains. “But then the other avenue of thought is it could have been a stranger who simply overpowered her or tricked her. We just have very little to go on.”

Mortvedt did confirm to PEOPLE that investigators are interviewing a number of people Tibbetts knows or seems to “have a connection to,” including University of Iowa students and her co-workers.

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Police and volunteers have been looking for any sign of Tibbetts since last Thursday, when her parents reported her missing from Brooklyn, Iowa, where she lives.

The last time she was seen alivewas on July 18, when someone spotted her on her regular evening jog in Brooklyn.

She also sent a text message that nightat about 7 p.m., and boyfriend Jack opened a Snapchat message from her about 10 p.m., though it’s unclear when she sent it.

The message was a selfie that appeared to have been taken indoors, Jack has reportedly said. He said he last saw Tibbetts on July 16 before traveling some two hours away for a construction job.

Tibbetts is described as 5-foot-3-inches tall, weighing about 120 lbs., with long brown hair and brown eyes.

Investigators are also poring over the data recovered from Tibbetts’ social media accounts and her fitness tracker as well as extensive surveillance footage from the area.

Anyone with information about her whereabouts is urged to email investigators at tips@poweshiekcosheriff.com or call 641-623-5679.

source: people.com