Wardens block entry to prisons after knife attack on colleagues Prison wardens the length and breadth of France turned out in numbers to block access to jails following a knife attack by a "radicalised" Islamist inmate at a prison in Alencon/Conde-sur-Sarthe which left two of their colleagues seriously injured. IMAGES of Paris's La Sante prison where around 60 wardens participated in a peaceful protest and blocked the entrance to the prison.