Not sure...but not terrorism:
http://www.dailymail.co.uk/news/article-3332480/Several-people-treated-gunshot-wounds-ongoing-hostage-situation-French-town-close-Belgian-border.html
As another poster said—Roubaix is where the suspected bomb-maker behind the Paris atrocities is originally from.
And they’re using Kalishnikov’s same as ISIS attackers. May be a robbery, or may not be.