BUFFALO, NY—Tyrone J. Carter, rap artist Jay-Z's 75-year-old grandfather, was arrested Monday for transporting prescription drugs across the Canadian border in the trunk of his 1998 Oldsmobile. "My grandson says I shouldn't have unlocked the trunk unless the cops had a warrant, but what's a man supposed to do?" said Carter, who was busted with more than $1,000 worth of pharmaceutical-grade Diovan, Lipitor, and Lanoxin. "Don't the police have anything better to do than hassle a sick old man? My insurance doesn't cover my pills anymore—I gotta get my heart medicine somewhere." The arresting officers said the pills had a U.S.-pharmacy value of nearly $18,000.