A hearing into a complaint of inappropriate behaviour made against Red Bull Formula 1 team boss Christian Horner will take place on Friday.

Red Bull said it took the allegations “extremely seriously” when they emerged on Monday and started an investigation.

Horner, 50, has won six constructors’ championships with Red Bull since becoming team principal in 2005.

Asked about the allegations by Dutch newspaper De Telegraaf, external, Horner said: “I completely deny these claims.”

Though Red Bull has not confirmed the nature of the complaint, BBC Sport understands the claims relate to an allegation of inappropriate and controlling behaviour.

More to follow.