German Ferrari driver Michael Schumacher was stripped of pole position at the Monaco Grand Prix and had to start from the back of the grid.
He was accused of deliberately stopping on the track to prevent his rivals from setting a faster time at the qualifying race on Saturday.
His rival Fernando Alonso was put in pole position placing him at a major advantage.
Schumacher said: "I didn't cheat.. it is pretty tough to be asked if I did."
Race stewards took eight hours to decide that Schumacher had stopped his car deliberately after running wide so his rivals couldn't get passed him.
In a statement they said they saw "no justifiable reason for the driver to have braked with such undue, excessive and unusual pressure at this part of the circuit."
But Schumacher claims his engine stalled and responded: "Whatever you do in certain moments, your enemies believe one thing and the people who support you believe another."