| Petrol station bosses have begun an investigation into whether heavy rain caused water to get into a fuel pump. |
| Air accident investigators have launched an investigation following the incident on Sunday morning. |
| The investigation will look at both manufacturer guarantees and extended warranties. |
| Anyhoo, I've run out of energy, and so any investigation of what on Earth the Council of Ministers is, will have to wait till some other time. |
| Scientific investigation proceeds not by amassing conclusions but by accumulating incremental evidence, which is all that we can know. |
| The former banker who became a whistle-blower, triggering a massive investigation of the Swiss bank. |
