Bloomington Police conducted polygraph tests on Wednesday in the case of missing Indiana University student Lauren Spierer.The tests follow the confiscation of computers and discs from the Smallwood Apartment complex where Spierer lives. Special Section: Lauren Spierer Spierer's father said surveillance video taken from the complex showed a fight between a group of young men.Investigators said the fight happened on the same night Lauren went missing. The male acquaintance who police said was with her was also in the video, police said.The details of the tests and the identities of the people tested were not released, 6News' Chance Walser reported.Meanwhile, hundreds of volunteers showed up on Wednesday to help search for Spierer. Many of the volunteers were female students at IU and said they wanted to warn other young women about the dangers of walking alone at night.IU men's head basketball coach Tom Crean showed up to lend a helping hand."This is an extremely real-life, very tough, very disheartening situation," Crean said.Sarah Sparks, 19, said she could only imagine what Spierer's family is going through."You need to be really careful, especially in a college town. It's just crazy that something like that could happen in Bloomington," Sparks said. | Other female students admitted that, just like Spierer, they too have walked Bloomington's streets alone late at night."It's really scary. I know it's a wake-up call for me. It's really been keeping me up at night, really upsetting. We've just been watching the news hoping for some good news, former student Ashley Goff said.Detectives said they planned to continue search efforts on Thursday. Bloomington police were scheduled to hold another news conference on Thursday at 11:30 a.m.