Police in California have arrested a man on suspicion of starting the Line Fire - a major wildfire that has burned more than 34,000 acres (53 sq miles) in the state.

Flames engulfed train tracks at ‘strategic points’ across the country this morning, just hours before the Olympic Opening Ceremony was due to kick off on the River Seine in Paris.

A Canadian man who claimed forest fires were the result of a government conspiracy has pleaded guilty to lighting more than a dozen blazes during the country’s record-breaking wildfire season, as nearly 100 fires persist in drought-stricken regions.