Lightning strikes on the famed Great Wall in Beijing injured a total of nine Chinese and foreign tourists on Thursday, state media reported.

The three Americans, two visitors from Hong Kong and four from other Chinese provinces were hurt at about 2:30pm (0630 GMT) when lightning hit a balefire tower on the Mutianyu section of the Great Wall, Xinhua news agency said.

Quoting the emergency response office of the suburban Huairou District government, the report said the nine were receiving treatment in hospital but were not in danger.

The heavy rain, lightning and thunder also caused havoc at the Beijing Olympic Games, forcing some events to be rescheduled.