Arturo Gallegos Castrellon is described as the main leader of the Aztecas street gang. Mexican authorities say he confessed to numerous killings, including that of a U.S. consular employee that was previously blamed on a different Aztecas leader.

Hmmm ... interesting that such a hard-case would roll over with such alacrity. I wonder how many seconds it was after the arrest until his successor had consolidated his position...