A federal grand jury on Thursday indicted a 52-year-old Pearl City man on four counts of producing, distributing and possessing child pornography.

Ray K. Yokoyama allegedly produced child pornography two times in 2009, allegedly distributed child pornography over an Internet file-sharing network in July 2012 and allegedly possessed child pornography in January 2013, according to the indictment and other court documents, U.S. Attorney Florence Nakakuni said in a news release.

The FBI began an investigation after an undercover agent in Dallas downloaded pornography from a computer in Hawaii.

Agents traced the Internet protocol address to Yokoyama’s Pearl City home, where they recovered computer storage media, including a disk with images of a boy engaged in sexually explicit conduct.

The grand jury indicted Yokoyama on two charges of producing child pornography one charge of distributing child porn, one charge of possession of the images including those of a minor under age 12, the U.S. Attorney’s Office said.

Yokoyama has been in federal custody since his Jan. 18 arrest.