Marcel Siem of Germany overcame wet and windy conditions plus a lightning delay Friday to shoot a 3-under 68 for a one-stroke lead after the second round of the French Open.

Siem holed five birdies to offset a double bogey and totals 6-under 136.

Alexander Noren of Sweden shot 67 for the best round of the day and moves into second place, one stroke clear of Anders Hansen of Denmark and George Coetzee of South Africa, who both shot 68s.

Raphael Jacquelin of France (71) was tied for fifth with Francesco Molinari of Italy (68) and David Lynn of England (72), three strokes off the lead.

Play was suspended in the afternoon for about 90 minutes because of the threat of lightning.