(CNN) -- Joe Saenz rubbed his hands together and smiled as he walked up to a Los Angeles County, California, home. His demeanor gave no clues as to what would happen next. Once in the front yard of the home, police said, he drew a gun and shot the victim several times, then in the head, execution-style. The slaying, caught on tape in October 2008, was over drug money, police said. Los Angeles County Sheriff's Department Detective Traci Gonzales knew there were drug and gang ties to the slaying, so she showed the videotape to Los Angeles Police Department Detective Ron Chavarria, a veteran on the gang beat.
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Joe Saenz wanted in connection with four murders, a kidnapping and a rape
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Saenz, a member of Cuatro Flats gang, reportedly kills man on video
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FBI believes Saenz graduated from local gangs to international drug trafficking
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Saenz allegedly killed mother of his child out of fear she'd turn him in
The chilling video, @placeholder said, shows why Saenz is so dangerous.