11.   An investigation is underway into how the toxins got into the feed.

12.   An inquiry is still underway into its cause.

13.   An investigation is underway into whether anyone at the clinic or factories were aware of the diversion and whether anyone profited from it.

14.   An investigation was underway into the cause of the accident.

15.   An investigation was underway into the cause of the fire.

16.   Company spokesman John Allen said an investigation is underway into the cause of the collapse.

17.   Eleven police officials were suspended Monday pending completion of several investigations underway into the spying allegations.

18.   He said the probe was still underway into the amount of government losses caused by the irregularities.

19.   Investigations were underway into the cause of the accident.

20.   Minani said investigations were underway into the cause of the crash, but he rejected the suggestion the aircraft might have been downed by Hutu rebels.