A 27-year-old Nebraska woman accused of having sex with her teenage stepson has made a deal with prosecutors and pleaded no contest to sexual assault.

Prosecutors had lowered the charge and dismissed an incest charge in exchange for her plea on Thursday.

The Associated Press is not naming the Grand Island woman to protect the identity of her stepson.

Police say the boy was 15 when his stepmother began having sex with him. Investigators say the boy’s father called police to report he had seen his wife having sex with the boy, who is 16 now.

Her sentencing is scheduled for May 8.