31.   She has been a key figure in the continuing investigations into the Whitewater land deal in Arkansas.

32.   Should it launch an investigation into every going concern qualification?

33.   Sir John has reportedly ordered an investigation into allegations that the unit burgled and burnt down his offices to destroy evidence.

34.   The chief demanded a thorough investigation into the murder.

35.   The FBI is conducting a criminal investigation into the bombing.

36.   The investigation into his former tactician, Gary Jobson, was begun because Koch believed Jobson was publishing privileged information.

37.   The investigation into the cause of the air crash is continuing.

38.   The investigation into the causes of the air crash are continuing.

39.   The investigation into the crash continued amid speculation that terrorists had destroyed the plane.

40.   The new democratic regime has carried out very few investigations into war crimes.