ST. LOUIS -- A 27-year-old St. Louis woman is accused of playing a role in a box-cutter attack that injured two students on a school bus last month.

Brittni Clayton, 27, is charged with first-degree assault, armed criminal action, first-degree child endangerment, third-degree assault and exhibiting a weapon.

The St. Louis School District reports the Oct. 26 attack left a male student with a puncture wound on his back and a female student with a cut hand. Both students were 16 and treated at a hospital.