BATON ROUGE — A Lafayette man was arrested for allegedly pistol-whipping an LSU student in the Business Education Complex after he followed the victim from his apartment in early October, according to a warrant. Corey Willis Jr., 24, was arrested by the East Baton Rouge Sheriff's Department on Wednesday. He was booked into the East Baton Rouge Parish Prison, where he was charged with carrying a firearm on school property and aggravated second-de…