The Mexican prosecutor investigating the death of a vacationing North Carolina woman last year says he is working with American authorities to determine if there were any accomplices in her death.

Baja California Attorney General Daniel de la Rosa said in November that he’d secured an arrest warrant for a friend who’d traveled to Cabo San Lucas with Shanquella Robinson and several other friends  — a trip that ended in tragedy with Robinson dead and conflicting reports about how she died, as CrimeOnline previously reported.

Robinson died on October 29, the day after she and six friends traveled to Cabo. Initially, the friends told Robinson’s family that she died of alcohol poisoning, but her death certificate says she died from a severe neck injury. And then a video surfaced that appeared to show one of Robinson’s friends attacking her while she did nothing to defend herself.

Anaya said at the time that the arrest warrant was for a person he described as the “direct aggressor” against Robinson. The suspect, however, has not been officially named.

At a news conference on Friday, Anaya said he is working with U.S. authorities toward the extradition of the suspect, a process that can be lengthy, even with countries that have extradition treaties, as the U.S. and Mexico do. He also said he wants U.S. authorities to grant interviews with everyone involved in the investigation, according to WSOC.

“It is important to obtain the court order with regard to whoever is responsible for this, but also if there were any accomplices,” he said. Telemundo Charlotte provided the translation of Anaya’s remarks for WSOC.

Anaya stressed that “there is no impunity in this case.”

“Everything is under investigation,” he said.

Anaya also said that he’ll be alerted if the suspect, a woman, leaves or enters the country.

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