WEB EXTRA: Mollie Tibbetts brothers speak with ABC News
Two brothers of a missing University of Iowa student spoke with ABC's Good Morning America Tuesday.
20-year-old Mollie Tibbitts disappeared July 18 while she was dog-sitting at her boyfriend's house in the Poweshiek County town of Brooklyn.
On Friday, July 20, many people joined a search of areas around that town, but didn't find anything.
Tibbetts' brother Scott told ABC why he thinks so many people are helping to try and find Mollie.
"She took everything with passion, and she loved her friends and family. And she was eager, and that's why you see all of that support. She really affected a lot of people and meant a lot to a lot of people," Scott said.
Agents from the FBI and the Iowa DCI are helping with the investigation. The FBI is using Mollie's online history and cell phone app usage to try to pinpoint where she might be.
The agencies said they have not ruled out the possibility Mollie was abducted.
Click the video above for a portion of the ABC News interview. (Note: the quality of the audio is not the best)
Jake Tibbetts is in the red shirt, while Scott Tibbetts is in blue.
ABC will include more of the interview on Wednesday's Good Morning America.