Four people were arrested Wednesday on charges they were running a pornography production company out of their Somerset County residence while a 7-year-old child was present.

Marina E. Volz, 30; Ashley D. Romero, 26; Sean F. Allen, 51; and Dulcinea Gnecco, 19, all of Franklin Township, were charged with multiple counts of endangering the welfare of a child, according to a statement from the Somerset County Prosecutor’s Office.

The prosecutor’s office began investigating the incident in January after receiving a referral from the New Jersey Division of Child Protection and Permanency (CPP), which reported that the child was living in the Coburn Lane home where Volz and his roommates were creating pornography, Somerset County Prosecutor Michael Robertson alleged in the statement.

On Jan. 28, a search warrant was executed at the home, and investigators substantiated CPP’s findings and the agency removed the child from the home, the office said.

Prosecutor’s investigators seized cell phones and computers for forensic examination and found several sexually-explicit photos and videos of the 7-year old child on them.

The new evidence led to the arrest of Volz and his three roommates on Wednesday. They were taken into custody at the home and all four were taken to the Somerset County Jail, where they were lodged pending a detention hearing.

In addition to the the endangering of the welfare accusations, Volz, Allen and Romero were also charged with aggravated sexual assault.

Authorities did not elaborate on the child’s relationship to any of the suspects.

Chris Sheldon may be reached at csheldon@njadvancemedia.com. Follow him on Twitter @chrisrsheldon Find NJ.com on Facebook.

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