A "commando" of six gunmen gained access to a Mexican prison after midnight on Jan. 3, killed four inmates in their sleep, and then tried to shoot their way out, sparking a shoot-out with guards that left five of the attackers dead. The assialants infiltrated the Social Rehabilitation Center (CERESO) in Tuxpan, disguised in uniforms of the Guerrero state Ministerial Police, telling guards they were bringing in a prisoner. Army troops were subsequently sent in to secure the facility. The slain inmates were said to be serving time for drug trafficking and kidnapping charges. (Borderland Beat, Jan. 4; BBC News, La Jornada, Jan. 3) This is the latest in a wave of cases of cartels taking their bloody turf wars to the inside of Mexico's prisons.