As the FBI and other agencies began their search of a Vigo County landfill as part of the investigation into the disappearance of missing IU student Lauren Spierer, Spierer's parents were also at the Sycamore Ridge Landfill Tuesday.

Charlene Spierer tells our partners at Fox59 that they're hoping any kind of information comes their way because of this search.

"We don't know what we're going to find or if we're going to find anything at the landfill. It could be a clue. I could be evidence. We just don't know but of course, I would give anything to have one minute with Luaren so my hope is that she's still alive," Spierer says.

Lauren's mother says she questions the story of Jay Rosenbaum, who says he saw Lauren walking away from his apartment building at 4:30 the morning Lauren disappeared. Lauren's father Robert also says he's upset with all of the people who were the last to see his daughter.

"The folks who were with her the night that she disappeared left town shortly after her disappearance and we've not had any meaningful contact with them since they left," he says.

The Spierers, who have been in Bloomington for the past two months, say they will be returning to New York on Wednesday but they will return to Bloomington.