Transcript for Missing Iowa student's family makes public plea: 'We can bring her home'
tonight,m Iowa this eveng, an emotion appeal from the mother, the and the boyfend of Tibbetts, pleading for return. All before the E college student vanished more O, B her family, as you're about to hear,rmly belies she is sll alive.night, the reward jumping to than $170,000, after what S believed be a major tip, what wve now lrned Abo that tonight, as well. ABC's alexez in Iowa tonight. Reporter:tonight, T family of missing 20-year-old university of Iowa student, mollie Tibbetts, wit T biggest public ping for mollie sturn.e's out the, D I think we can B her home. The reward for information leading to her whereabouts yrocketing, now $172,000. We lieve thatollie is still alive, and if someone with you tplease relse her. Reporter: The family did not say if their plea was based on anything they're learning from police, who have been searchin fomoie since S was last . She'd be living wiyfriend, dtowho was work construcon100 miles ay when sh disappeared. Police say he is not a suspect. Today, jk to the poum sectly to mollie's possible abductor. You know, if they're listening, T I just likeo know that -- this W you. How would you feel? Ju do T right thingr go. Repr: Crimestpe central Iowa Sall tips will be kept confidential. More tn so far. Including a poss thisruck stop in Muri 230 miles away, and this afternoon, investigators canvasinis field ithe unty wheollie disappeared.bo turn U nothing. Alex Perez joins us live tonight fr yn, Iowa, the town where molibbetts went ssing. Anw therches indicatioyou that leading sg in? Reporte that' T, David. They are certainly not hope. E are sns lik this O across the area. Thoritietell me they have about 40tigators working this case family Mrs believe there's someone out there that has hat will help crack this se. Da Perez tonight. Althank you. Nexttonight, thereme weather
This transcript has been automatically generated and may not be 100% accurate.