Charlene Spierer reiterated her pleas for those who have information to come forward.
The searches over the past three weeks have covered a 10 mile radius from where she was last seen.
Saturday is “Find Lauren Day” and the Spierer’s hope volunteers will help canvass the area in the search for their daughter.
Volunteers are urged to gather at 8 a.m. at McNutt Quad on the IU Campus.
The Spierer's discussed the community support in the search for their daughter.
The police released these images of a mid-2000's Chevrolet Silverado or Colorado 4 door pickup truck.
IU officials confirm that a donation of $50,000 will be given to the Spierer family.
Police have at least 10 persons of interest, but refuse to detail who these people are, or their involvement in the case.
The parents of the missing IU student say the best thing people can do to help is to join in the search for their daughter.