Roseville man charged with criminal sexual conduct, enticement of a minor

By: Brendan Losinski | Roseville - Eastpointe Eastsider | Published May 22, 2021

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ROSEVILLE — A Roseville man is facing charges in federal court and Macomb County Circuit Court for alleged sex crimes involving minors.

Nikolas Boris Mariani, 20, is facing two charges of third-degree criminal sexual conduct involving a person age 13-15 in Macomb County Circuit Court. In U.S. District Court for the Eastern District of Michigan in Detroit, Mariani has been charged with receipt and possession of child pornography, transfer of obscene material to a minor, and coercion and enticement of a minor to engage in illicit sexual activity.

An affidavit filed by the FBI states that a friend of Mariani allegedly picked up two female victims, one 18 years old and the other 17 years old, and drove them to Mariani’s house in Roseville on Nov. 12, 2020. According to the affidavit, the two females began drinking at the home, and the 18-year-old said she later awoke with pain consistent with sexual assault and received a video showing Mariani’s friend sexually assaulting her from the 17-year-old. The FBI believes that Mariani took the video. The 18-year-old made a sexual assault report with Roseville police on Nov. 15, according to the affidavit.

Other offenses were reported to the police Nov. 16 by the mother of a 14-year-old girl. Allegedly, the 14-year-old had met Mariani — who was using the handle “Boris” — through Snapchat and had a sexually explicit exchange with him that included sending him nude photos, according to the girl’s mother. According to the FBI, the 14-year-old was interviewed by investigators on Dec. 8, and she told them that she had sexual intercourse with Mariani and that both of them were aware of the other’s age.

FBI documents said that Mariani came in voluntarily and spoke with investigators a week later, on Dec. 15, and admitted to being Boris on Snapchat and that he had sex with the 14-year-old and was aware of her age. His cellphone was seized and searched following the execution of a search warrant to do so. Photos of the 14-year-old were allegedly found on it, according to the FBI. Investigators also said the phone shows that Mariani had allegedly sent the 14-year-old a video of sexual acts during their correspondence.

On Dec. 31, during a search for a missing female minor, the Roseville Police Department visited Mariani’s home, and he answered the door partially clothed. After he reportedly consented to a search of the home, police reported that a third female minor, also 14 years old, was discovered hiding under the bed, partially clothed. She was not the missing female minor that the police had been searching for.

Mariani denied any sexual activity with her but said that they had met on Snapchat, according to the FBI. The affidavit states that the 14-year-old said that they had sex twice and he had told her that he was 18. Two more cellphones were seized, and correspondence with several young women was allegedly found — with several of the young women underage, according to the affidavit. He was arrested on Dec. 31 for the incident involving the third female minor.

The third-degree criminal sexual conduct charges in Macomb County Circuit Court are for his encounters with the first 14-year-old and the third 14-year-old, according to the affidavit. Evidence gathered from the communications and photos sent on the cellphones led to the federal charges.

Mariani was initially released on bond, but that decision was overturned in another federal court hearing May 5. Court documents related to that decision to have Mariani stay in the custody of the U.S. Marshals pending trial state that Mariani had a history of criminal activity going back to age 11, including a charge of felony robbery.

Mariani’s next court date in Macomb County Circuit Court is a pretrial set for June 2. His next federal court date is a preliminary examination scheduled for June 14.

The Roseville Police Department did not wish to comment on the matter and said the investigation is being handled by the FBI.

Mariani’s attorney in the U.S. District Court case, Karen J. Davis Roberts, could not be reached for comment prior to publication. His attorney in the Macomb County Circuit Court case, Scott F. Wyatt, also could not be reached for comment.