At least two people have been killed and 10 wounded in a shooting near a Christmas market in the French city of Strasbourg.
"There were gun shots and people running everywhere," one local shopkeeper told BFM TV.
"It lasted about 10 minutes."
A source at the prosecutor's office said the motive behind the shooting was not immediately clear and that an investigation is under way to see if it was terrorism-related.
France remains on high alert after a wave of attacks commissioned or inspired by Islamic State militants since early 2015, in which about 240 people have been killed.
French Ecology Minister Francois de Rugy tweeted: "Solidarity and support for the people of Strasbourg. Our support too for the security forces. We are united and determined to protect the French people."
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