An illegal alien allegedly murdered a 16-year-old New Jersey girl after the two split following a ten-month relationship, prosecutors claim.

Bryan Cordero-Castro, a 20-year-old illegal alien, was arrested and charged after allegedly stabbing to death 16-year-old Madison Wells, reported a few months ago.

This week, Cordero-Castro appeared in court for the first time, where prosecutors accused him of murdering Wells after she broke off their ten-month relationship.

According to , the illegal alien repeatedly ed Wells for nine hours before her murder, demanding she meet with him. When Wells agreed to the meeting, prosecutors allege Cordero-Castro stabbed the teenager to death.

Investigators said the illegal alien stabbed her at a residence blocks away from her home in Long Branch, New Jersey. When police arrived on the scene, Wells was taken to a nearby hospital, where she was pronounced dead.

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“She was just this bright light that everybody needed in their life,” one friend said.

Cordero-Castro entered the U.S. through the southern border as an unaccompanied minor, arriving in the country illegally without any adult border crosser accompanying him, confirmed months ago.

Since 2014, there have been as many as a  unaccompanied minors who have arrived at the southern border, entering the country illegally.

Should Cordero-Castro be convicted of murdering Wells, he will face at least 30 years in prison before he is deported to Guatemala.

John Binder is a reporter for Breitbart News. Follow him on Twitter at .