McLaren has accused Ferrari of breaking a gentleman's agreement with the signing of the FIA's safety director Laurent Mekies.
Earlier this week Ferrari confirmed Mekies will join its technical team in September, leaving his role with the FIA in the process. As safety director Mekies oversaw the implementation of the Halo device for this year, while he has also served as deputy to F1 race director Charlie Whiting since the start of 2017. Though he has now stepped down as deputy race director, he will remain in his safety role until the switch to Maranello.
The move follows a controversial episode last year, when the former head of the FIA's technical department, Marcin Budkowski, was confirmed to be joining Renault.