Christian Horner is under investigation at Red Bull - Daily Mail
- Christian Horner is under investigation at Red Bull Daily Mail
- BREAKING: Christian Horner investigated as Red Bull chief accused of 'inappropriate behaviour' The Mirror
- Red Bull respond to allegations about Christian Horner as Formula 1 chief placed under investigation... talkSPORT
- F1 News: Christian Horner Speaks Out On Red Bull Investigation Over Misconduct Allegations Sports Illustrated
- Horner under internal investigation by Red Bull - report Racingnews365.com