A 19-year-old man wanted in North Carolina in connection with the alleged armed robbery and murder of a teenager last month was arrested Tuesday morning at a welcome center off Interstate 95 in Laurel after his Baltimore-bound bus from Atlanta stopped there, Maryland State Police said. Darius J. Smotherson, of Kannapolis, N.C., was arrested at the rest stop near Route 32 in Howard County without incident and is being held at the state police Waterloo Barrack, where Kannapolis Police Department detectives were expected to arrive Tuesday afternoon to begin interviewing him, police said. Police will attempt to have Smotherson extradited...