LINCOLN, Neb. (AP) — A Lincoln man accused of statutory rape had won joint custody of the child that resulted from having sex with her underage mother.

Court records say the woman was 15 in 2012 when she willingly had sex with Zachary Zysset, who was 20 then. Under Nebraska law, people 19 and over cannot have sexual contact with people under 16.

Zysset’s been charged with sexual assault of a minor. His attorney didn’t immediately return a call Friday from The Associated Press.

The woman reported the 2012 incidents to Buffalo County authorities earlier this year, although she said most of the sexual encounters occurred in Adams County. An arrest warrant affidavit says an Adams County sheriff’s investigator learned that Zysset later established paternity and won joint custody of the little girl.