St. Paul police have ended their search for a missing college student, but friends of 19-year-old Dan Zamlen aren't giving up. They've formed their own team to search for the University of St. Thomas freshman from Eveleth, Minnesota. Zamlen was last seen Sunday morning, leaving a party. This week, police in the Twin Cities used a bloodhound in a boat to try to find Zamlen's scent along the river. Friends and family say they'll continue to search all weekend, if necessary, hoping to find Zamlen alive.