51.   The security forces are casting their net wider.

52.   The police say he had no connection with the security forces.

53.   Seventeen people were killed when security forces fired on demonstrators.

54.   The Turkish security forces have started searching for the missing men.

55.   The Romanian government yesterday unveiled a new, scaled-down security force.

56.   ...criminal elements within the security forces.

57.   Security forces have been out in strength.

58.   The security forces have extensive powers of search and arrest.

59.   The shooting happened while the man was trying to evade capture by the security forces.

60.   Security forces have uncovered a plot to overthrow the government.