Five months before Ahmed met Weinberg, he bilked another investor out of $600,000 in another investment scam after pretending he was part of a development project, according to the Norwegian court documents.
Even the supposed iPhone solar charger that made him famous in Norway may not be his own invention, according to Norwegian press reports, which also revealed that Ahmed had made up how many devices had been ordered.
In a 37-page document filed with the court on June 3, the government argues for a 100-month prison term, citing Ahmed's history of criminal activity. His attorney is asking for an 18-month sentence.
"In reviewing defendant's communications, I was struck by how much pleasure he got out of betraying victim's trust, and his lack of respect for the victim," wrote FBI Special Agent Alice Tsujihara.
"Defendant texted that he should get the 'Best Scandinavian Thieves' award' and that 'being a thief is a profession.' "
A friend in Norway who went to business school with Ahmed helped him pull off the Bieber scam, she wrote, by creating false documents and posing as business associates.
"To defendant, fraud was 'like poker or blackjack' where you 'call or raise. Never fold!' " Tsujihara wrote.
Weinberg said he didn't know anything about Ahmed's previous troubles. As of now, he hasn't gotten any of his money back.
"I feel sorry for him," Weinberg said. "But I'm also furious. ... It's all that I've got to not get on an airplane and go to visit him in prison, and not sit across from him and just ask, 'Why, why would you do this?' "