Boyfriend of Missing Kentucky Mother Takes Polygraph Test

Officials intensify the search for Crystal Rogers, a mother of five who has been missing for over a week.
2:15 | 07/11/15

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Transcript for Boyfriend of Missing Kentucky Mother Takes Polygraph Test
up but we'll start here with an intensifying search this morning for a mother of five missing for a week. The family of crystal Rogers with a heartbreaking plea increasing reward money hoping someone comes forward with information. All this as the results of her boyfriend's polygraph are released and ABC's Marci Gonzalez is here with the latest. Good morning. Reporter: Her boyfriend admits they have a rocky relationship, but insists he has no idea where she could be. Police calling her disappearance concerning and unusual. This morning, a desperate and emotional search for this mother of five from Kentucky now missing for more than a week. We love you. We want to know where you're at. Contact us. Let us know you're okay. Reporter: 35-year-olds crystal Rogers last seen by her live-in boyfriend brooks Houck. He claims she stayed up late and when he woke up in the morning she was gone. Since then police and volunteers working to retrace Rogers' steps scouring farmland and woods but the only sign of Rogers, her car. This maroon chevrolet with a flat tire, her keys, purse and uncharged cell phone still inside found along the side of Kentucky's bluegrass parkway in an area loved ones tell police she rarely traveled. If he said he went to bed at 11:00 and she was still up on her phone, I can't see her just jumping in her car with a dead cell phone. Reporter: Houck insisting he had nothing to do with the disappearance of the mother of his 2-year-old son taking a polygraph telling HLN's Nancy grace the results were inconclusive. I'm 100% completely innocent in this. I want the emphasis to remain on crystal's safe return. Reporter: That is her family's plea this morning. Crystal, we love you. We're looking for you. And we're not gonna stop. Reporter: And the reward for information leading to Rogers' safe return up to $71,000. Family mens are now caring for her five children who, of course, are so desperate for her to come home. So tough on those kids. Marci, thank you. We do want to turn it over

This transcript has been automatically generated and may not be 100% accurate.

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