Pirelli has concluded an item of debris is likely to have caused Sebastian Vettel's tyre failure during the Austrian Grand Prix, with no evidence of 'fatigue' registered.

The German was leading at the Red Bull Ring prior to his first pit-stop when the right-rear tyre delaminated on the home straight, pitching the Ferrari into the wall but causing no physical harm to the driver.

Prompting Pirelli to conduct a thorough investigation of the tyre, which gave way after 28 laps, the firm says there is no evidence of structural failure or fatigue, thus concluding debris was the likely cause for the blow-out.

"The few remaining parts of the tyre in question, together with an in-depth comparison to other tyres used in the race, reveal no signs of fatigue or structural failure in the right-rear tyre itself.

"Consequently, the issue appears to be caused by an item of debris, which led to the breakage of the tyre."

The issue marked Vettel's third DNF of the 2016 season and leaves him 57 points off the lead fight in the title race.