{"id":366207,"date":"2026-08-08T13:14:22","date_gmt":"2026-08-08T13:14:22","guid":{"rendered":"https:\/\/www.newsbeep.com\/us-fl\/366207\/"},"modified":"2026-08-08T13:14:22","modified_gmt":"2026-08-08T13:14:22","slug":"miami-dade-man-pleads-guilty-to-2012-murders-of-wife-and-her-2-daughter-nbc-6-south-florida","status":"publish","type":"post","link":"https:\/\/www.newsbeep.com\/us-fl\/366207\/","title":{"rendered":"Miami-Dade man pleads guilty to 2012 murders of wife and her 2 daughter \u2013 NBC 6 South Florida"},"content":{"rendered":"<p>A Miami-Dade man has pleaded guilty to the <a href=\"https:\/\/www.nbcmiami.com\/news\/local\/mother-2-daughters-found-dead-in-miami-triple-homicide-police\/1912761\/\" data-type=\"link\" data-id=\"https:\/\/www.nbcmiami.com\/news\/local\/mother-2-daughters-found-dead-in-miami-triple-homicide-police\/1912761\/\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">horrific murders of his wife and her two young daughters<\/a> nearly 14 years ago and will now face a possible death sentence.<\/p>\n<p>Alberto Sierra, 42, pleaded guilty on Friday to three counts of first-degree murder, three counts of kidnapping, two counts of abusing a human body and one count of armed burglary.<\/p>\n<p>The charges stem from the killing of Gladys Machado and her 4- and 6-year-old daughters, who were found slain in a northwest Miami-Dade home on Nov. 13, 2012.<\/p>\n<p>\t\t\t\t\t\t<img decoding=\"async\" src=\"https:\/\/www.newsbeep.com\/us-fl\/wp-content\/uploads\/2026\/08\/080726-Gladys-Machado-and-her-daughters.jpg\" loading=\"lazy\"   alt=\"Gladys Machado and her daughters\"\/><\/p>\n<p>\t\t\t\t\tFamily PhotosFamily Photos<\/p>\n<p>Gladys Machado and her daughters<\/p>\n<p>Authorities said days earlier, Sierra, Machado and the girls were at the Mall of the Americas when the couple got into an argument and he pulled out a knife then drove them to the home.<\/p>\n<p>Sierra locked the girls in one room and locked himself and Machado in another room, authorities said.<\/p>\n<p>According to an arrest affidavit, Sierra suffocated Machado with a plastic bag &#8220;and subsequently sexually assaulted her,&#8221; then let one of the girls out of her bedroom and suffocated her.<\/p>\n<p>He suffocated the other daughter with a plastic bag while she slept, then sexually assaulted the other daughter, the affidavit said.<\/p>\n<p>The bodies of Machado and her daughters were found three days later in a closet at the home, police said.<\/p>\n<p>\t\t\t\t\t\t<img decoding=\"async\" src=\"https:\/\/www.newsbeep.com\/us-fl\/wp-content\/uploads\/2026\/08\/080726-Alberto-Sierra-in-court.png\" loading=\"lazy\"   alt=\"Alberto Sierra in court on Aug. 7, 2026.\"\/><\/p>\n<p>\t\t\t\t\tNBC6NBC6<\/p>\n<p>Alberto Sierra in court on Aug. 7, 2026.<\/p>\n<p>Sierra and Machado were married but had no children in common and were not living together when the murders took place, the affidavit said.<\/p>\n<p>Authorities had questioned and released Sierra but he later <a href=\"https:\/\/www.nbcmiami.com\/news\/local\/husband-charged-in-deaths-of-mother-2-daughters-police\/2057944\/\" data-type=\"link\" data-id=\"https:\/\/www.nbcmiami.com\/news\/local\/husband-charged-in-deaths-of-mother-2-daughters-police\/2057944\/\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">gave a full confession to the murders<\/a>, the affidavit said.<\/p>\n<p>Sierra will now face a punishment phase where a jury will recommend whether he should get life in prison or the death sentence.<\/p>\n<p>Jury selection was expected to begin Aug. 17.<\/p>\n","protected":false},"excerpt":{"rendered":"A Miami-Dade man has pleaded guilty to the horrific murders of his wife and her two young daughters&hellip;\n","protected":false},"author":2,"featured_media":366208,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[9],"tags":[123,125,124,373],"class_list":["post-366207","post","type-post","status-publish","format-standard","has-post-thumbnail","category-miami","tag-miami","tag-miami-headlines","tag-miami-news","tag-miami-dade-county"],"_links":{"self":[{"href":"https:\/\/www.newsbeep.com\/us-fl\/wp-json\/wp\/v2\/posts\/366207","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.newsbeep.com\/us-fl\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.newsbeep.com\/us-fl\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/us-fl\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/us-fl\/wp-json\/wp\/v2\/comments?post=366207"}],"version-history":[{"count":0,"href":"https:\/\/www.newsbeep.com\/us-fl\/wp-json\/wp\/v2\/posts\/366207\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/us-fl\/wp-json\/wp\/v2\/media\/366208"}],"wp:attachment":[{"href":"https:\/\/www.newsbeep.com\/us-fl\/wp-json\/wp\/v2\/media?parent=366207"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.newsbeep.com\/us-fl\/wp-json\/wp\/v2\/categories?post=366207"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.newsbeep.com\/us-fl\/wp-json\/wp\/v2\/tags?post=366207"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}