A student from the University of Michigan has been found dead nearly 24 hours after going missing in freezing conditions. The last time Lucas Mattson was seen alive, he was leaving a fraternity party around 1 a.m. on Friday, January 23. He was said to be wearing only a T-shirt and jeans and no coat despite the temperatures dropping to as low as 0 degrees at the time, according to the University of Michigan's Division of Public Safety and Security.