Tadej Pogacar became the first Slovenian to win the Tour de France after he retained the yellow jersey in the 21st stage on Sunday, a day after he pulled off a major coup to take the overall lead.
The incident came the same day an extremist claiming allegiance to IS stabbed two police officials to death in a Paris suburb.
Abballa was convicted in September 2013 for belonging to a jihadist cell that recruited fighters to send to Pakistan.