Man: He might be one of the last people to have seen missing student

Devin Riley said he was sitting on his porch with his daughter when he saw Mollie Tibbetts jog by close to 9 p.m.
1:07 | 08/09/18

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Transcript for Man: He might be one of the last people to have seen missing student
To ABC news exclusive on the search for that missing I will college student. Mauling tidbits who vanished three weeks ago after going out for a run. Tonight we're hearing from a neighbor who says he saw her jogging by his house just before she disappeared ABC's Alex Perez back on the story tonight. Tonight we're hearing from DeVon Riley who says he could be one of the last people to have seen Molly tidbits of before she vanished three weeks ago the fire about 8:30 AM say. And I remember. Seeing her job. In an exclusive interview with ABC news Riley says he was sitting on his porch with his daughter that night I remember what she was wearing authorities won't comment on witnesses but Riley says he was questioned by investigators who searched his home. Molly scene here just a day before she went missing. So far investigators have interviewed 7300. People including Wayne Cheney who was convicted of stalking in 2014. But Cheney says he never meant Molly and has cooperated with police Tom Cheney has not been named a suspect in the case investigators say there are following up on more than 2000 tips they've received so far.

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

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