Alondra Luna Nunez was returned to her family in Mexico on Wednesday after DNA testing in the United States showed she was not the long-missing daughter of Houston resident Dorotea Garcia.
The Prosecutor's Office in the southwestern state of Michoacan said in a statement yesterday that it is looking into the case involving a civil court judge in Los Reyes, including media reports and videos that "suggest probable acts against the child's best interests and could constitute an illegal action."
Alondra had asked for DNA tests in Mexico before she was sent to the United States, and her parents presented more than a dozen documents including her baptismal records, family photographs and a copy of her birth certificate.
But Judge Cinthia Elodia Mercado ruled Alondra was in fact Alondra Diaz Garcia, who was taken from Texas by her father in 2007. The other girl remains missing and the father's whereabouts are also unknown.
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Elodia Mercado said this week that it was not within her authority to order DNA testing, and she was obligated to ensure Mexico followed international conventions on child abductions.
After the ruling, Alondra travelled by bus with Garcia to the US border, crossing at Laredo, Texas. Alondra was granted entry based on the birth certificate of Garcia's daughter and the court order, according to Mexico's Foreign Ministry.
This week, when asked if she harbored any anger about the forced weeklong separation from her family, Alondra, singled out the judge.
"I'm angry only at her, because it was her who caused all this," Alondra told The Associated Press. "Nobody but her is guilty. At least that's what I think.