Lenny A. was stabbed in Luynes prison in Aix-en-Provence.
The victim was shot four times and was hospitalized. His vital prognosis is not in jeopardy. Lenny A is the brother of a previous victim of score-settling and is suspected of having wanted to avenge his death. They are accused of a triple assassination that occurred on April 2, 2016, the bloodiest of the year. The trial into the triple assassination opened a week ago.