Four women from the No More Deaths advocacy group were convicted on misdemeanor charges Friday for entering a national wildlife refuge without permits to provide life-saving aid to migrants crossing the Arizona border with Mexico, AP reports.

The big picture: Judge Bernardo Velasco's decision was the first conviction of humanitarian volunteers in a decade, according AP. The women — Natalie Hoffman, Zaachila Orozco-McCormick, Oona Holcomb and Madeline Huse — were attempting to leave water and food for migrants traveling through the Cabeza Prieta refuge.