31.   Last December, the minister announced that the government had uncovered a plot by unknown persons to burn down the refinery.

32.   The dog, along with another company watchdog, was quarantined, and police started procedures against unknown persons on grounds of homicide due to negligence.

33.   The German foreign ministry in Bonn said earlier Friday that two men and two women were abducted by unknown persons as they were travelling to Marib city from Sanaa.

34.   The German foreign ministry in Bonn said the two men and two women were abducted by unknown persons as they were travelling between Marib city and the Yemeni capital.

35.   The radio said that ahead of Easter unknown persons raised the Croatian banner on the burnt mosque.