Toro Rosso team boss Franz Tost has refused to comment on rumours that technical director Giorgio Ascanelli has left his role with the team.

Ascanelli isn't present for the German Grand Prix this weekend at Hockenheim, with the team insisting he is away on holiday, although reports have suggested that Ascanelli has instead taken the decision to leave the team after disagreements over the ongoing development of the current Toro Rosso car.

"I can only tell you that Giorgio Ascanelli is on holiday and there's confidentiality between the two parties," Tost replied when asked to confirm the status of Ascanelli within the team. "That's all that I can say to this."

Pushed further on the matter when the question was raised of whether allowing the technical director to be away on a race weekend, Tost refused to comment any further.

"Sorry," he said. "I've said everything."

Toro Rosso has scored just six points this season, all of which came in the opening two races of the season in Australia and Malaysia.