A 31-year-old Sanford man who pleaded guilty in May to transporting child pornography was sentenced Thursday in U.S. District Court to serve 10 years in prison, according to U.S. Attorney Thomas E. Delahanty II.

Richard M. Moulton Jr. will also have to adhere to 10 years of supervised release under the sentence imposed by Judge Nancy Torresen.

According to court records, Moulton sent an email message to the undercover account of a federal agent in February 2014. Moulton attached four video files to the email depicting minors engaged in explicit sexual activity. In the email, Moulton asked, “Can u send 4 back also.”

Evidence presented during the court hearing showed that Moulton frequently used his email account to solicit child pornography from others and to send child pornography videos and images.

Torresen said the crimes committed by Moulton were serious and noted the lasting impact such offenses will have on the children’s lives.

The investigation was conducted by the U.S. Immigration and Customs Enforcement’s Homeland Security division and the Sanford Police Department.