Detective Confronts Triple Murderer About Killings

A detective returned to the stand and gave gruesome testimony about how Alberto Sierra described killing his wife and stepchildren in Miami in November 2012. Sierra told the detective that an argument began over his wife, Gladys Machado’s, alleged infidelity. He then described what he did to the bodies before they were found side by side in a closet at their home on Nov. 13, three days after the killings.

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