One person has been killed and 10 others wounded in a shooting in the eastern French city of Strasbourg, police say.
The gunman has been identified and is being actively looked for, they added.
The French Interior Ministry confirmed a “serious public security incident” in the city, and residents in the Neudorf area have been urged to stay indoors.
The shooting is said to have happened close to a Christmas market in one of the central squares, Place Kleber.
Security officials have cordoned off the area and trams have been stopped, according to reports.
The motive for the attack is unclear, but the Christmas market has been the object of Islamist threats in the past, Hugh Schofield reports from Paris.
Eyewitness Peter Fritz told the BBC he heard gunfire and found a person who had been shot, lying on a bridge. He said he tried to resuscitate him but the man died.
Some unconfirmed reports said three people had died.
Local journalist Bruno Poussard wrote on Twitter that there had been a dozen shots fired on his street in the city centre – one or two to begin with, then in bursts.
Emmanuel Foulon, a press officer for the European Parliament, wrote that there was “panic” in the centre following the sound of gunfire and that police with guns were running through the streets.
Strasbourg deputy mayor Alain Fontanel tweeted: “Shooting in downtown Strasbourg. Thank you all for staying home while waiting for a clarification of the situation.”
A shopkeeper told BFM TV: “There were gun shots and people running everywhere. It lasted about 10 minutes.”
The European Parliament, which has a base in Strasbourg, was sealed off with no-one able to leave or enter the building.
British MEP Richard Corbett tweeted that he was in a restaurant in the city and the doors had been locked.
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