SPRINGFIELD, Mo. (AP) – A former southwest Missouri school employee won’t serve more time for sexually abusing two boys on a school bus as it was headed to a Springfield zoo.

The Springfield News-Leader reports that 28-year-old Garrett Stark was sentenced Friday in Greene County to 15 years. But that sentence will be served at the same as another 15-year-old sentence for child sexual abuse that was imposed previously in Webster County.

Authorities say Stark worked in a Logan-Rogersville School District program that provided child care and also as a substitute teacher until July 2016, when a bus camera showed him molesting a 6-year-old and a 7-year-old.

The father of one of the boys cried while talking about what happened. He says he and his son have spent “many nights crying together.”