1.   Investigators suspect that many of the cargoes of coal had a high sulphur content.

2.   The cause of the fire has not yet been determined, but investigators suspect arson.

3.   Although Connor was in prison at the time of the Gardner theft, investigators have long suspected him of involvement in the robbery.

4.   Although investigators suspect the rudder could have played a role in the crash, no cause has yet been determined.

5.   American investigators have long suspected that bin Laden was involved.

6.   American investigators suspect that Ahmad might be an alias for Shaykh Saiid, a top associate of Osama bin Laden.

7.   Both the Army and SPECO blamed the crash on manufacturing defects in a SPECO-made gear which federal investigators also suspect of being faulty.

8.   But investigators also suspect Bulger is relying on a trusted associate to routinely funnel him cash.

9.   But investigators strongly suspect that the brothers played a role in the bomb plot, the officials said.

10.   But investigators also suspect a trusted Bulger associate may be routinely funneling him money.