31.   Only last month an investigation by The Northern drew attention to the increasing problems of solvent abuse in North-East towns and cities.

32.   An ex-postman in the village is now the subject of an investigation by the Post Office following the discovery of the undelivered letters.

33.   The complaints led to an investigation by police, trading standards officers and the Federation Against Copyright Theft.

34.   An investigation by the Stock Exchange found that no malpractice occurred, however.

35.   Huge contributions from parents are saving school from a complete breakdown, according to an investigation by the Mail on Sunday.

36.   Although an investigation by the Mississippi Gaming Commission lasted several years, the indictment was not handed up until last September.

37.   Also, what is the status of a separate investigation by the Internal Revenue Service?

38.   An investigation by a panel of independent arson experts concluded that the fire began simultaneously just after noon in three separate places inside the compound.

39.   An investigation by both agencies is to be concluded this month.

40.   An investigation by contributors to the Usenet newsgroup alt.folklore.urban traced it to a spurious report phoned to a South African radio talk show.