HILO, Hawaii — A Maui farmer has been convicted of sexually assaulting four girls on the Big Island between 1998 and 2007.

The Hawaii Tribune-Herald reports Michael Martin Zelko pleaded no contest Friday to 11 counts of third-degree sexual assault.

Zelko was initially charged with multiple counts of first-degree sexual assault and continuous sexual assault of a minor under the age of 14.

He pleaded no contest to the lesser charges after reaching an agreement with prosecutors.

According to court documents, the youngest victim was 5 years old when the abuse started. All the victims were under the age of 10.

The 59-year-old is scheduled to be sentenced May 20.