Official Transcript
Zombies which were spotted in Mixcoatl. These were people that stood against Javier, whom he captured and turned into zombies. There is speculation that they were released by Javier as weapons of terror. Javier punished people and made examples of them by injecting them with the T-Virus and having them serve as "guard dogs" for his mansion. Apparently there are types which have been artificially placed in a state of suspended animation, and made faster and more ferocious by inducing a V-ACT reaction. They are generally kept on chains in shackles, but when as enemy is in the vicinity, they are released.