A Livingston man and three other Louisiana men were arrested on a variety of sex offenses involving juveniles, the Louisiana Attorney General’s Office reported Friday.

Anthony Thomas Kurtz, 40, 19341 Taylor Road, Livingston, faces 500 counts of possession of pornography involving juveniles and 50 counts of distribution of pornography involving juveniles. Each count carries a maximum sentence of 20 years, the Attorney General’s Office wrote in a news release. He also faces one count of failing to register as a sex offender, an Attorney General’s Office spokesman later added.

The federal Homeland Security Investigations Office began the investigation of Kurtz, and several other federal, state and local law enforcement agencies participated in the case, Attorney General’s Office spokesman Aaron Sadler said.

When he was apprehended, “investigators located thousands of images of child sexual abuse on a computer belonging to Kurtz,” Sadler wrote in an email Friday.

Kurtz was arrested Friday morning at the end of a child porn round-up conducted by the state’s Cyber Crime Unit in the past two weeks.

The cases are unrelated, Sadler said.

Also arrested were:

John Wellman, 29, of Slidell, on 99 counts of possession of pornography involving juveniles and one count of possession of pornography involving juveniles under the age of 13.

Chad Michael Ruiz, 32, of Slidell, who faces one count each of computer-aided solicitation of a juvenile and indecent behavior with a juvenile.

Billy Ray Parker, 51, of Wisner, arrested on one count of distribution of pornography involving juveniles.