A New Jersey teen has pleaded guilty to aggravated manslaughter in the death of a 12-year-old girl who disappeared last fall while out riding her bike.

Justin Robinson admitted in court Wednesday that he lured 12-year-old Autumn Pasquale to his home in Clayton, then strangled her.

Under a plea agreement, Robinson, 16, faces 17 years in prison.

His brother Dante, who was 17 at the time of the killing, was also charged with murder in the case. His case is pending in juvenile court.

An attorney for Autumn's mother said prosecutors did "the best they could."

Forty-eight hours after the girl went missing Oct. 20, her body was found in a recycling bin near the Robinsons' home.