The owner of a company that distributes blueprints to print 3D-printed guns was charged with sexual assault on Wednesday after he allegedly had sex with an underage girl, according to an affidavit filed in Travis County, Texas.

Cody Wilson, the 30-year-old founder of Defense Distributed, is accused of paying a girl under the age of 17 $500 after the two had sex. The affidavit states that a counselor contacted police on Aug. 22 to report the incident, which allegedly took place on Aug. 15.

The Austin Statesman reported that the girl took part in a forensic interview on Aug. 27, where she told police that she exchanged messages with a man on the website SugarDaddyMeet.com. The individual used the account name "Sanjuro," and later identified himself as Cody Wilson, according to the affidavit.

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The girl alleged that she met Wilson on Aug. 15 and he drove the two to a hotel, where they had sex and Wilson paid her $500. Police used surveillance footage and hotel records to confirm her account, The Austin Statesman reported.

Investigators also reportedly compared photos used on Wilson's online account to his driver's license photo and determined that the two matched.

Wilson had not been booked into the Travis County Jail as of Wednesday morning, The Austin Statesman reported.

Wilson has been at the center of the debate in recent months over 3D-printed guns. He has asserted it is his First Amendment right to distribute blueprints for citizens to produce the weapons on their own, even as a judge has barred Defense Distributed from uploading directions for printing 3D-printed firearms to the internet.