Crime / Mexico Mexico Nabs Casino Fire Mastermind in Gun Battle He's third in command of the Zetas By Kevin Spak, Newser Staff Posted Oct 13, 2011 10:40 AM CDT Copied Soldiers escort Carlos Oliva Castillo, alias "La Rana," or the "The Frog," as he is presented to the press in Mexico City, Thursday Oct. 13, 2011. (AP Photo/Alexandre Meneghini) Mexican soldiers apprehended the Zetas boss accused of ordering the horrific Casino Royale fire yesterday after a pitched gun battle across the city of Saltillo. Carlos Oliva Castillo, aka la Rana (the Frog), is the third-highest ranking member of the Zeta cartel, in charge of operations in three northeastern states, including Nuevo Leon, where the casino is located, Reuters reports. Five Zeta members were earlier arrested in connection with the blaze, which with a death toll of 53 was the worst attack on civilians in Mexico in decades. (More Mexico stories.) Report an error