14 on trial over 2015 Paris attacks which sparked terror wave

Thousands of people gather at Republique Square in Paris in the wake of the 2015 terror attacks against Charlie Hebdo (AP)

Thirteen men and a woman are going on trial over the 2015 attacks against the satirical newspaper Charlie Hebdo and a supermarket in Paris that sparked a wave of violence by the so-called Islamic State group in Europe.

Seventeen people and all three gunmen died during the three days of attacks in January 2015 in the French capital.