Two people were shot when a soldier's pistol accidentally went off during a speech by French President François Hollande.
"I hope there is nothing serious", Mr Hollande said.
Only one bullet was reportedly fired, which brushed one person's calf before hitting another person in the leg.
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One local report said the safety catch of the sniper's weapon was unlocked, allowing the gun to be discharged accidentally when the officer moved. Local media are reporting that the shot was mistakenly fired by a police sniper.
Hollande was opening a new high-speed rail link from Paris to Bordeaux at Villognon when gunshots rang out. They were then taken to the nearby hospital of Girac. Neither injury was life-threatening.
Hollande was almost 17 minutes into his roughly 20-minute speech when the loud crack of gunfire was heard. "I think not", he said, asking whether anyone had been hurt. "The President stopped speaking as the shot was investigated, and those injured attended to".
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