Thomas, 44, stabbed two students at random in 2017 in Paris and 2021 in Ivry-sur-Seine (Val-de-Marne), because he thinks they are responsible, through their knowledge, for these voices that he hears in his head. He has been under medical care for more than ten years.

Despite his treatment which calms him on a daily basis, “paranoid delusional bursts” can sometimes occur. “Attacking them is not a solution, I should have instead contacted anti-nanotechnology associations…”