 We're following new information on an unarmed carjacking outside Washington Hospital Center last month that left a 55-year-old woman dead. The D.C. woman charged with unarmed carjacking in connection with that has been declared incompetent to stand trial. A D.C. Superior Court judge ruled that 22-year-old Kayla Brown is not lucid enough to take part in her own defense and that she has to be moved to St. Elizabeth's Hospital.