Typically the fed prison system has the option to allow reporting of incidents or not, and they are allowed to refrain from doing pressers or a press release about a deadly incident exactly because it could be triggering to hostile factions or organized crime (such as if OC was hired to perform a hit inside). So you would expect that if they were motivated by the very real threat of say cartel warfare inside, they would keep a tight lid on the info until the threat was reasonably contained. Yeah I do think there is more to this Kerkshot. If there was a threat of hostile faction retaliation, then they don't talk about the hostile faction retaliation - it's like the first rule of Fight Club.