11.   The OKBomb investigation may drag on for weeks and months, unless there is another lucky break.

12.   Yet as the investigation dragged into its sixth month, it seemed possible that the true cause was an unidentified mechanical malfunction.

13.   Former Whitewater independent counsel Kenneth Starr says President Clinton is the reason his investigation dragged on for years and cost tens of millions of dollars.

14.   The ensuing investigation has dragged on for almost two years.

15.   The RCMP has faced repeated criticism from relatives of the victims who have complained the investigation has dragged on too long.

16.   While the investigation dragged on for at least two years, Milan maintained a high public profile, vehemently denying any wrongdoing.