Prosecutors say a North Carolina woman who died while vacationing in Mexico was fatally struck by one of her friends. Shanquella Robinson, 25, was on holiday with six college friends in Cabo San Lucas when she died on October 29. Her parents say the friends first claimed Robinson died from alcohol poisoning, but an autopsy report from the Mexican Secretariat of Health later found that she died from “severe spinal cord injury and atlas luxation.” On Wednesday, a local prosecutor for the state of Baja California Sur announced that an arrest warrant an an extradition request had been issued, signaling that it was another American who killed Robinson. On Thursday, the prosecutor’s office released a statement confirming that it was “one of the friends” who delivered a fatal blow. Last week, a video began circulating online showing Robinson being violently attacked by another woman. Out of shot, someone says: “Quella, can you at least fight back? At least something?”