they were stabbed in their beds in the middle of the night. police say the suspect is a graduate student in criminology at washington state university. in a chilling social media post, the suspect tried to solicit information from criminals to, quote, understand how emotions and psychological traits influence decision making when committing a crime. let's go to cnn's veronica miracle live in idaho. how did police get this guy? >> reporter: alyson, so much information has come out in the last 12 hours. so much that we've learned about bryan kohberger and a source telling pamela brown just recently that bryan kohberger drove his white hyundai elantra that one police were looking for from idaho all the way across the country to pennsylvania to hisparent's house around christmastime. and that source telling cnn during that time police were