Auckland serial sex offender, Luca Fairgray, has been jailed for four-and-a-half years for crimes against a 13-year-old girl

A jury found the 22-year-old guilty of three charges of sexual conduct with a young person in February.

In an impact statement, the victim expressed frustration about Fairgray explaining his actions using his autism, which she also has.

The jury didn't know Fairgray had previously been convicted of 10 assault charges against six teen girls.