<p>A man was arrested in the northern Mexican state of Nuevo Leon after he confessed to murdering his fiance's mother in a Facebook post, officials said.<br /><br /></p>.<p>Roberto Alejandro Santos, 32, was arrested Sunday and is being held in connection with the killing of 61-year-old Lucila Reyes, Nuevo Leon deputy prosecutor's office spokesman David Perales told EFE news agency Monday.<br /><br />Reyes's body was found Saturday afternoon at her house in the city of San Nicolas, but investigators suspect she was killed in the early morning hours.<br /><br />"I did it, I don't know how they can allow me to live another day," Santos said in a Facebook post.<br /><br />Santos was already a suspect in the case because his fiancee, 25-year-old Julibeth, had filed a complaint with police after he beat her.<br /><br />The suspect is being held on a preventive arrest order of up to 30 days, prosecutors said, adding that a judge will decide whether to charge him once the order expires.<br /><br />Santos's confession on Facebook is not enough to charge him and the case will depend on what he tells prosecutors.</p>
<p>A man was arrested in the northern Mexican state of Nuevo Leon after he confessed to murdering his fiance's mother in a Facebook post, officials said.<br /><br /></p>.<p>Roberto Alejandro Santos, 32, was arrested Sunday and is being held in connection with the killing of 61-year-old Lucila Reyes, Nuevo Leon deputy prosecutor's office spokesman David Perales told EFE news agency Monday.<br /><br />Reyes's body was found Saturday afternoon at her house in the city of San Nicolas, but investigators suspect she was killed in the early morning hours.<br /><br />"I did it, I don't know how they can allow me to live another day," Santos said in a Facebook post.<br /><br />Santos was already a suspect in the case because his fiancee, 25-year-old Julibeth, had filed a complaint with police after he beat her.<br /><br />The suspect is being held on a preventive arrest order of up to 30 days, prosecutors said, adding that a judge will decide whether to charge him once the order expires.<br /><br />Santos's confession on Facebook is not enough to charge him and the case will depend on what he tells prosecutors.</p>