A bus driver who admits sexually assaulting and videotaping the special needs children he transported in New Hampshire and Maine has been sentenced to 160 years in prison.

Forty-six-year-old Milton, N.H., resident John Wright received the maximum sentence Friday after pleading guilty in September to five counts of sexually exploiting children and one count of possessing child pornography.

Investigators say Wright drove special needs children from Strafford and Rockingham counties in New Hampshire and from nearby Kittery, Maine. They say they found thousands of images of child pornography on his computer.

U.S. Attorney John Kacavas say some of the children were completely non-verbal and others had a variety of disabilities. He says it's beyond his capacity to achieve justice for the young victims despite Wright's long sentence.