A woman is seen next to flowers and candles laid in the street in tribute to the victims of a deadly shooting two days ago, in central Strasbourg, on December 13, 2018. - Hundreds of French anti-terror police are still hunting for a fugitive gunman who shot dead two people and injured 13, in an attack in the eastern city of Strasbourg on December 11, 2018. (Photo by PATRICK HERTZOG / AFP)

French gendarmes walk past flowers and candles laid in the street in tribute to the victims of a deadly shooting two days ago, in central Strasbourg, on December 13, 2018. - Hundreds of French anti-terror police are still hunting for a fugitive gunman who shot dead two people and injured 13, in an attack in the eastern city of Strasbourg on December 11, 2018. (Photo by Patrick HERTZOG / AFP)

A man rides his bicycle past flowers and candles laid in the street in tribute to the victims of a deadly shooting two days ago, in central Strasbourg, on December 13, 2018. - Hundreds of French anti-terror police are still hunting for a fugitive gunman who shot dead two people and injured 13, in an attack in the eastern city of Strasbourg on December 11, 2018. (Photo by Patrick HERTZOG / AFP)

French gendarmes walk past flowers and candles laid in the street in tribute to the victims of a deadly shooting two days ago, in central Strasbourg, on December 13, 2018. - Hundreds of French anti-terror police are still hunting for a fugitive gunman who shot dead two people and injured 13, in an attack in the eastern city of Strasbourg on December 11, 2018. (Photo by Patrick HERTZOG / AFP)