Police arrested a 47-year-old Kalihi woman Thursday morning after her eight-year-old daughter told school officials that her mother threatened her during an argument in their home.

Police said the mother and daughter argued at about 6:30 a.m. when the mother allegedly threatened her daughter with “a dangerous instrument.” The girl went to her school and reported what had happened. Police went to the girl’s home and at 11 a.m. arrested her mother for first-degree terroristic threatening.

The police did not describe the alleged dangerous instrument.