The Red Bull driver had just started a flying lap when a stoppage for championship rival Lewis Hamilton caused the red flags to be waved during the early stages of FP2 on Friday at Zandvoort.

Verstappen appeared to overtake Lance Stroll between Turns 10 and 11 after the red flag had come out while he was on a push lap and the Aston Martin driver was on a slow lap.

On Saturday morning ahead of final practice, the stewards requested Verstappen and a team representative to report to them at 1045 local time regarding the incident.

"Alleged breach of Appendix L Ch IV Art 1, Appendix H of the FIA International Sporting Code and Article 50.2 of the FIA Formula One Sporting Regulations, alleged overtaking car 18 whilst red flags were shown at 15:10 between turns 10 and 11.”

If found guilty, Verstappen could be hit with a grid penalty at his home race.

Red Bull team principal Christian Horner downplayed any concern over the incident following second practice on Friday.

“Max, as soon as there was a red flag, he backed right out of it,” Horner told Sky Sports.

“I can only think he was on a slow lap anyway. I was watching the data and he was completely out of it as soon as he got the message about the red flag.”