A 38-year-old man was seriously injured Wednesday morning in a crash at the Maryland Live! casino parking garage. Firefighters and paramedics responded to the 7000 block of Arundel Mills Circle around 4:45 a.m. and found a vehicle that had struck a concrete wall on the third level of the garage, said county fire department Capt. Russ Davies. The man, who was the operator and lone occupant of the vehicle, was transported by paramedics to University of Maryland Shock Trauma Center in Baltimore with injuries that were considered serious but not life-threatening, Davies said. No additional information on the crash was immediately available.