The family of an IL boy missing for eight years was initially elated by a report that suggested he might have been found.
Even after being read his Miranda warnings, Rini continued to claim he was Pitzen, according to the detective.
After confessing that he was not Pitzen, Rini told federal agents he had heard about the missing boy's case on the ABC television program 20/20 and wanted to get away from his own family, according to court documents.
Brian Rini of Medina, Ohio, was jailed in Cincinnati on Thursday, a day after he identified himself to authorities as Timmothy Pitzen, who disappeared in 2011 at age 6.
The charge against Rini should send a message about the damage that making such false claims can do, said Benjamin Glassman, U.S. Attorney for the Southern District of Ohio. He has yet to be charged with a crime and the authorities have not said whether he will be or what his motive was in claiming a false identity.
After identifying himself as Timmothy, Rini complained of abdominal pain and was taken to Cincinnati Children's Hospital, the affidavit said.
This comes after detectives received DNA results proving 23-year-old Brian Rini is not Timmothy Pitzen.
Rini first told police he was being held by two white men with bodybuilder builds, according to one police report.
Jonathon Rini said his brother was "placed on juvenile probation and then he just continuously violated his probation". Their adventure started after Amy Fry-Pitzen checked her son out of an IL elementary school on May 11, 2011. "I just want to get home".
She was found dead days later with her wrists slit in an apparent suicide in an IL hotel room. "I know he's out there, we just have to find him". Later that day, his mother took him out of school, and authorities found Pitzen's mother dead by suicide two days later in a motel room in Rockford, Illinois. However, his mother had left behind notes saying the boy was safe with loved ones but would never be found.
He said his brother had used his name when stopped for a traffic violation in 2017.
Rini said "he wished he had a father like Timmothy's because if he went missing, his father would just keep drinking", the Federal Bureau of Investigation said in court papers.
Often, they find a susceptible audience, both in family members desperate to fill an emotional hole and in a public eager to fit a happy ending on a situation as unfathomable as the disappearance of a child - a sentiment in Timmothy Pitzen's case.
Timmothy Pitzen, missing since 2011, is shown in an undated photo and a rendition of what he may look like as a teenager. Jonathan Rini said he hasn't talked to his brother in years but worries that he's off the medicine he's prescribed for a range of mental health issues. She drove him hundreds of miles, and they visited a zoo and a water park.