Gunmen attacked a high school in northwestern Nigeria before dawn on Monday (November 18). They took 25 schoolgirls and killed at least one staff member, authorities said. It's the latest abduction of students in the region. No group immediately claimed responsibility for abducting the girls from the boarding school in Kebbi state. Additionally, the gunmen's motivation was unclear.RELATED: 83-Year-Old Recalls Night That Emmett Till Was Kidnapped & MurderedMore Details About The High School AbductionPolice said gunmen took the boarding schoolgirls from their dorms at 4 a.m. Monday.