Abdelhakim Dekhar, the man arrested on Wednesday on suspicion of carrying out recent shootings in Paris, was convicted in 1998 for his links to a "Bonnie-and-Cyde" style murder spree in France.
He was convicted of buying a gun used in the 1994 shooting attacks by student Florence Rey and her lover Audry Maupin, in which three policemen and a taxi driver were killed.
More top news
The US president enjoyed rousing support for his political agenda as a formerly hostile audience cheered his plans in office to the rafters.
The former leader said the party needed to learn lessons after his successor Paul Nuttall failed to unseat Labour in a hard-fought campaign.
Toddler Harry Studley was left blind in one eye after Jordan Walters, 25, shot him in the head with an air rifle last year.