Following a massive investigation, a Hudson Valley man was charged with sexual manipulating 3 underage girls into sending him sexually explicit photographs.

Robert J. Garneau, 21, of Warwick was charged with 3 counts of sexual exploitation of a minor, each carry a minimum sentence of 15 years in prison and a maximum sentence of 30 years in prison.

“Robert Garneau’s alleged crimes are the nightmare of every modern parent,” Manhattan U.S. Attorney Preet Bharara said in a statement. “Using every day social media websites, Garneau allegedly exploited minors for his own sexual gratification.”

According to the Southern District of New York, U.S. Immigration and Customs Enforcement’s, and Homeland Security, from Sept 2014 to December 2014, Garneau used Instagram and KIK to communicate with a 12-year-old girl from California.

On August 10, 2015, and July 18, 2015, Garneau engaged in the same type of activity with two more minors .

During his communications with his victims, Garneau utilized the screen names “Raptorr427,” “BobbySixx,” “Allison Denario” and/or “Giannafitz81.” While communicating with his victims, he allegedly posed as a minor and threatened his victims that if they did not send additional photos and/or videos, they would be arrested for the photos and/or videos they had already sent.

He also threatened to show photos and videos to the victim’s Instagram followers, officials say.

Authorities believe there could be more victims. If you have information to report, contact Homeland Security Investigations through its toll-free Tip Line at 1-866-DHS-2-ICE.