Investigations by French and British police concluded that their chauffeur, Henri Paul, was driving under the influence of alcohol and prescription drugs; paparazzi chasing the couple are also believed to have contributed to the accident.[11][12] Fayed's father, Mohamed Al-Fayed, has claimed that the couple were executed by MI6 agents.[13] Fayed's former spokesman, Michael Cole, has claimed that the couple had become engaged before their deaths.[14]