Lauren Spierer's Roommate: Search needs to expand, clings to hope

(CBS/WISH) BLOOMINGTON, Ind. - "It's tough, but I'm not going to give up, " says Hadar Tamir, roommate of missing Indiana University student Lauren Spierer.

"I wake up every morning and hope for the best," Tamir continued.

Tamir, who, according to CBS affiliate WISH-TV, knows all of the "persons of interest"in the case - those who saw Spierer last - told the station, "I don't think they had anything to do with her disappearance."

She added, "I think it was a random person."

Spierer, 20-year-old from Greenburgh, N. Y., was last seen 4:30 a.m. on Friday, June 3, as she left a friend's apartment and started walking home to her downtown Bloomington apartment. Hundreds of volunteers, police officers, and experts have been searching for the student, whose disappearance was featured in a segment on "America's Most Wanted" Saturday, but there have been no major breakthroughs reported so far.

Tamir said if a stranger is responsible, then the search needs to be expanded outside of Bloomington.

She told WISH-TV, "I'm never going to let there not be hope."