Insight - Authorities missed many 'red flags' before Paris shootings

People look through the screened-off facade of the Bataclan Cafe adjoining the concert hall, one of the sites of the deadly attacks in Paris, November 21, 2015. REUTERS/Charles Platiau

PARIS (Reuters) - There were multiple chances to stop the men who attacked Paris.

In January, Turkish authorities detained one of the suicide bombers at Turkey's border and deported him to Belgium. Brahim Abdeslam, Turkish authorities told Belgian police at the time, had been "radicalised" and was suspected of wanting to join Islamic State in Syria, a Turkish security source told Reuters.