UPDATE: All four of the men have been indicted by a federal grand jury are are slated to appear in court later this week.

CENTRE COUNTY, Pa. (WTAJ) — The Patton Township Police, along with the Federal Bureau of Investigation (FBI) made four arrests of men who are accused of trying to meet minors for sex.

In a release from the Centre County District Attorney’s Office, the FBI led an investigation that resulted in four people being arrested. These men are accused of attempting to meet and pay to have sexual interactions with what they believed to be underage teenagers.

On Wednesday, Nov. 8, Gregory Wilson, 50, of Lewistown was arrested and charged with attempted coercion, and enticement of a minor to engage in sexual activity and prostitution.

On Thursday, Nov. 9, Walter Sitosky Jr., 66, of Houtzdale, was charged with patronizing a victim of sexual servitude, statutory sexual assault (greater than 11-year age difference), prostitution (promoting prostitution of a minor), unlawful contact with a minor and criminal use of a communication facility.

Also on Nov. 9, Christopher Crispen, 33, of Howard was charged with statutory sexual assault (greater than 11-year age difference), unlawful contact with a minor and criminal use of a communication facility.

On Friday, Nov. 10, Robert Mansberger, 58, of Cassville, was charged with patronizing a victim of sexual servitude, statutory sexual assault (greater than 11-year age difference), prostitution (promoting prostitution of a minor), unlawful contact with a minor and criminal use of a communication facility.

During a press conference on Monday, Nov. 13, officials said this was a months-long investigation that they deemed “successful.”

Currently, only Wilson’s case is federal, however, Centre County District Attorney Bernie Cantorna said they believe they will all be picked up federally.

“These are criminal charges and they’ll go through the court system no different than any other,” Cantorna said. “It’s our expectation that the three Centre County cases will be picked up by federal authorities and prosecuted federally.”

Cantorna followed this up by saying these investigations usually take time to develop, so making three arrests in four days was thanks to “extraordinary police work by multiple agencies.”

The FBI was assisted by officers from the Pennsylvania Northeast and Southeast Computer Crimes Units, Lycoming County District Attorney’s Office, Williamsport Bureau of Police, the Pennsylvania State Police and the Patton Township Police Department.