Authorities said Friday that 34-year-old Harry R. Gosser Jr. was arrested last week following the execution of a search warrant at his home.
The Delaware Attorney General's office said an online undercover investigation led detectives to Gosser's residence on Oak Hill School Road.
Officials said they found 25 files containing child pornography on Gosser's computer equipment, including depictions of sexual assault against young children who appeared to be 3 or 4 years old.
Gosser was charged with 25 counts of dealing in child pornography and was being held on $250,000 secured bail.
