Chief technical officer Adrian Newey is leaving Red Bull Racing after 18 years, BBC Sport and Germany’s Auto Motor und Sport reported Thursday.
Newey has helped Red Bull win seven drivers’ championships and six constructors’ championships during his tenure with the team.
According to BBC Sport, Newey’s decision stems from allegations relating to team principal Christian Horner, who was accused of misconduct toward an employee.
Red Bull dismissed the allegations following an internal investigation and Horner has denied any wrongdoing.
BBC Sport did not say where Newey will be heading, but said he has been linked to Ferrari and had received an offer Aston Martin with others likely to draw interest now as well.
Prior to joining Red Bull, Newey designed championship-winning cars for Williams and McLaren during the 1990s.
Under Newey’s watch, Red Bull ascended to the top of F1 capturing four consecutive constructors’ championships and drivers’ championships with Sebastian Vettel from 2010-13.
The team has claimed the past two constructors’ championships and three drivers’ championships with Max Verstappen.
Red Bull dominated last year winning a record 21 of 22 races.
They’re off to another roaring start this season with Verstappen and Sergio Perez sitting 1-2 in the standings and holding a 44-point lead over Ferrari in the constructors’ standings. Verstappen has won four of five races so far with a brake issue in Australia preventing a clean sweep.
Newey wrote his memoir How to Build a Car in 2017.