The potential threat posed by Islamist radicalization in prisons has been known for years. But after another prominent attack with a perpetrator who had spent time in German prisons, authorities are wondering whether enough is being done to counter the threat.
The man suspected of launching a deadly shooting and stabbing rampage in the centre of Strasbourg this week was shot dead by French police on Thursday evening.
German prosecutors have launched an investigation into the suspect in the deadly gun attack at a Christmas market along the French-German border, a spokesman for the service said Thursday.
The 29-year-old man being sought by police over a shooting in Strasbourg lived in a small apartment in a
ramshackle housing bloc and has convictions in France, Switzerland and Germany after a life of crime.
The suspect in the deadly shooting attack at a Christmas market in the French city of Strasbourg was jailed for burglary in Germany and is said to have shouted "Allahu Akbar" (God is great) before opening fire.
Following a deadly attack near a Christmas market in Strasbourg on Tuesday evening, the German federal police put up controls at several border crossings from Germany to France.
OPINION: It is time to stop moving the EU parliament between Brussels and Strasbourg every month, argues Swedish MEP Anna Maria Corazza Bildt and the Single Seat Steering group.
Three German NATO protesters have been given prison sentences of up to six months by a court in Strasbourg, a spokesperson from the German-French police centre in Kehl confirmed on Tuesday.