Paris on alert after terror threats (11 images)

French police say they've arrested 12 people in the south of the country suspected of having links to terrorist networks.

French national police said nine of those arrested have links to an Islamist movement and allegedly tried to obtain weapons and explosives, CNN reported Tuesday.

A French army police officer patrols the Eiffel Tower in Paris on October 4, 2010. Security has increased since travel advisories were recently issued by the U.S. State Department, Britain and Japan warning of potential terror threats from al-Qaeda in tourist destinations and public transport. UPI/David Silpa

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A French army police officer patrols in front of Notre Dame Cathedral in Paris on October 4, 2010. Security has increased since travel advisories were recently issued by the U.S. State Department, Britain and Japan warning of potential terror threats from al-Qaeda in tourist destinations and public transport. UPI/David Silpa

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A French army police officer patrols in front of Notre Dame Cathedral in Paris on October 4, 2010. Security has increased since travel advisories were recently issued by the U.S. State Department, Britain and Japan warning of potential terror threats from al-Qaeda in tourist destinations and public transport. UPI/David Silpa

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A French army police officer patrols in front of Notre Dame Cathedral in Paris on October 4, 2010. Security has increased since travel advisories were recently issued by the U.S. State Department, Britain and Japan warning of potential terror threats from al-Qaeda in tourist destinations and public transport. UPI/David Silpa

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