A 43-year-old unemployed woman from Amagasaki, Hyogo Prefecture, has been charged with indecent assault on a 15-year-old boy after confining him in her apartment and ordering six teenagers to abuse him, prosecutors said.

Tamae Okino was arrested together with the six boys and girls ranging in age from 14 to 18 on suspicion of confinement and sexual assault on the boy, a third-year junior high school student who also lives in Amagasaki.

According to the indictment, Okino and the teenagers held the victim at knifepoint in the apartment for about three hours early Oct. 9.