Korean Grand Prix constructionThis year's inaugural Korean Grand Prix is in danger of being called off following delays in the construction of the circuit.

Back in February there were already rumors that the race could be delayed until 2011, but those were denied by promoter Korea Auto Valley Operation, who said the circuit would be ready for June or July.

"The representative facilities of the circuit are in very good progress," said KAVO CEO Yung Cho Chung back then.

"The racing track itself is at 70 percent completion rate and the main grandstand currently stands at 80 percent. The Formula 1 track is now visible. It may be completed in June at the earliest."

The first Korean Grand Prix is scheduled for Oct. 24.

A report in German magazine Focus, however, says the work has been delayed because of major problems with the construction, and track designer Herman Tilke told the magazine that he was concerned the work would not be finished in time.

"For the first time I believe that a [Tilke] circuit is not going to be ready in time," he was quoted as saying by the magazine.

The report also claims Formula 1 supremo Bernie Ecclestone is likely to make a decision on the race sooner rather than later.

However, today Korea Auto Valley Operation CEO Yung Cho Chung told Autosport that the construction was, in fact, ahead of schedule and that there were no concerns about it not being ready for the race.