TRIAL HEADED SOUTH?

Defense attorneys said today that one of their key witnesses, Rosa Lopez, had left the country and gone to El Salvador maybe for good to escape harassment from the media. Lopez was expected to testify that she saw O.J. Simpson''s Bronco on the street outside his estate at the time the killings supposedly occurred. Defense lawyers said that if Lopez doesn''t return, attorneys on both sides may have to go to El Salvador to take her testimony.