Romain Grosjean has complained about Lewis Hamilton's driving in Austria, saying the world champion could have caused a "big crash" in FP1.
In the opening practice session Hamilton and Grosjean spun in quick succession at Turn 3. Replays later showed Hamilton had lost control through the corner and went into the gravel shortly before Grosjean arrived, with the positioning of the stranded Mercedes car forcing the Haas driver to back off into a spin of his own.
Grosjean said Hamilton could have stopped his car from rolling back on to the circuit.
"I wasn't very happy with Lewis' behaviour on track today," the Frenchman said. "He spun, he didn't put the brakes, he reversed in the middle of the track, and I was coming, so to have avoided I had to spin the car."
Grosjean was also upset with the world champion's driving in the afternoon session, accusing the Mercedes driver of re-joining the circuit unsafely during a flying lap. However, he also saw the funny side and joked he hopes to still be mixing it with the British driver come the grand prix on Sunday afternoon.
"Then in FP2 again he was doing some quali run and he going straight at Turn 2, coming back and staying in the middle of the track. I had a lot of Lewis around me today, and if it's the case again on Sunday then it means I'm well positioned!"
Asked if he wanted to speak to Hamilton in the drivers' briefing, which would have occurred shortly after Haas' media session, he replied: "If I get the chance, then yeah, because we could have had quite a big crash this morning. It's not something you want on your first run in FP1."
Though several driving-related reprimands were handed out after FP1, Hamilton was not investigated by the stewards at any stage during the day.