Federal prosecutors for Nebraska say 32-year-old Corey Hayes was sentenced Wednesday to 9 1/2 years in prison. He must also register as a sex offender.

Officials say Hayes in late 2015 engaged in an online chat and sent pornographic pictures to someone he believed was a 13-year-old, but who was actually an undercover Homeland Security agent. Federal agents say a search of Hayes’ home in 2016 found more than 150 files on electronic devices containing child pornography.