ANDREA RODRIGUEZ
  Associated Press

  HAVANA - A professor from Argentina who traveled to Cuba on a tourist visa was deported Thursday for working as a journalist without government approval.

  Fernando Ruiz, a journalism professor at Austral University in Buenos Aires, was put on a morning flight to Panama, said Eduardo Porretti, first secretary of the Argentine
  Embassy in Havana.

  Fidel Castro's government regularly deports journalists who arrive on tourist visas and work without obtaining the required government documentation.

  The Cuban government had no immediate comment on Ruiz's deportation.

  Porretti said Ruiz was detained Tuesday and the embassy was informed the next day.

  "We were successful in preventing (Cuban authorities) from opening a criminal file, so that if he wants to make a return visit he can," Porretti said.

  It was not immediately known what Ruiz reporting on. But Porretti said it was likely Ruiz had tried to contact dissidents or "deal with some kind of sensitive subject."