Toto Wolff claims allegations of ‘inappropriate behaviour’ against Christian Horner are ‘an issue for Formula One’ as he urges Red Bull to carry out a ‘transparent’ investigation

Toto Wolff today put Christian Horner under fire, saying his bitter rival should be held to the highest standards as a ‘role model’ for Formula 1.

The Mercedes boss spoke in Bahrain during pre-season testing in response to the controversy roiling the sport.

Red Bull team boss Horner is accused by a female colleague of ‘behavior management’ and sexual misconduct. Horner, the 50-year-old husband of former Spice Girl Geri Halliwell, emphatically denies the claims. She stands by him as he fights for his reputation.

Red Bull’s energy drink parent company is conducting a QC-led investigation into the allegations.

Mail Sport understands a decision could be made by the end of the week.

The Red Bull boss is accused by a female colleague of ‘behavior management’ and sexual misconduct, but denies all allegations

Pressure is mounting from a number of stakeholders within the sport – including Red Bull’s new engine supplier Ford – to demand a quicker resolution than previously predicted.

Wolff said: ‘It is clear: Formula 1 and the teams stand for inclusivity, equality, fairness and diversity. That means we don’t just have to talk about it, we have to live with it day in, day out. These are the standards we set for ourselves.

‘We are a global sport and one of the most important sports platforms in the world with role models.

“That said, there has been a lot of speculation in recent weeks. What is important and that stage is that a process must be completed. It has to be done the right way, with transparency.

‘We want to talk about racing cars and the sport rather than these very critical topics. It’s more than just a team issue; it is a phenomenon and a problem for the entire Formula 1 and every individual who works there.’