Law enforcement officials in Texas have made two additional arrests related to a child pornography case in which a man was previously charged with more than 3,000 criminal counts.

Cody Franklin, 28, who was initially described as a 'person of interest,' has now been charged with aggravated assault of a child.

Patrick Tumlinson, 47, has been arrested on four misdemeanors counts of failure to report aggravated sexual assault of child.

Slew of charges: James Tumlinson (left), 26, has been charged with 3,191 counts of possession of child porn. His father Patrick (center), has been charged with failure to report, and his friend Cody Franklin (right), has been charged with aggravated assault of a child

According to San Jacinto Sheriff's Office, Tumlinson's son, 26-year-old James Tumlinson, was arrested in Shepherd on February 28 on a single felony count of continuous sexual assault of a child.

Following an investigation, Tumlinson was charged last week with a second count of continuous sexual assault of a child, 3,191 counts of possession of child pornography and seven charges of possession and promotion of child pornography.

Sheriff Greg Capers told KPRC this is the 'worst case' of its kind he had even come across in his 37-year career in law enforcement.

So far, investigators have identified and spoke to seven of the underage victims depicted in pornographic photos and videos that were seized during a search of a home in the 900 block of Joyce Street in Shepherd.

Capers said some of the videos featuring local children between the ages of five and 12 depicted torture.

Authorities suspect there could be up to 20 more victims out there, and they would like to speak to them.

Tumlinson works as a plumber and lives in Shepherd, Texas, with his young daughter (left)

Franklin, James Tumlinson's friend, was previously named a 'person of interest' in the case

The younger Tumlinson works as a plumber and has a young daughter. He is currently being held in jail without bond.

His father's bond was set at a total of $40,000, at $10,000 for each of the four counts.

Franklin, who appears to have a young child of his own, is friends with James Tumlinson on Facebook. He was also ordered jailed without bond.