As rivals call on the FBI to examine a former mystery opponent of Congressman Joe Garcia, the Miami Herald has uncovered a new connection between them: Both used the same print shop for campaign mailers.

But the print shop, Image Plus Graphics, isn’t the only tie between Garcia and Jose Rolando “Roly” Arrojo, whose 2010 campaign violated federal campaign-finance disclosure rules.

Arrojo went to school and did business with Garcia’s top advisor, who was abruptly fired May 31 as the congressman’s chief of staff amid a state investigation into alleged absentee ballot-request fraud.

Arrojo, Garcia, and Garcia’s campaign have denied working in concert two years ago, but the mailers printed by the same vendor have led to new questions about the campaigns.

“I can assure you, we printed that piece and it has our permit number,” Image Plus Graphic’s president, Cliff Warren, told the Herald when shown Arrojo’s mailer.

“But I think it was done on the qt,” Warren said.

Warren said he couldn’t recall who paid for the Arrojo mailers or how many were printed two years ago, but he quickly identified Garcia campaign mailers printed by his shop over the years.

Arrojo refused comment.

Garcia said the decision to hire printers and produce mail pieces were made by his former top aide and campaign advisor, Jeffrey Garcia, who’s no relation and isn’t commenting amid the new state investigation.

Joe Garcia met Friday for about two hours with state prosecutors. He told them he knew nothing about the scheme in which people connected to his campaign might have fraudulently requested absentee ballots of other voters in the Aug. 14 Democratic primary.

In all, three campaign workers — including two of Garcia’s congressional staffers — were implicated in the fraud, and investigators raided three places in connection with the case.

“I knew nothing of this, and when I found out I fixed it,” Garcia said.

As for Arrojo and his connections to his 2010 campaign, Joe Garcia said it was a coincidence.

“I was told Arrojo was a tea party candidate, and there were lots of those in 2010,” Garcia said, acknowledging that Jeffrey Garcia had informed him about his one-time ties to Arrojo during the campaign.

Arrojo’s campaign bears a resemblance to yet another suspicious campaign by another candidate who faced Garcia two years later. That candidate, Justin Lamar Sternad, pled guilty in federal court to charges for breaking federal-campaign finance laws.

Last week, Sternad’s lawyer asked the FBI to investigate Arrojo.

“What’s fair is fair,” attorney Enrique “Rick” Yabor said. “It looks like Arrojo might have done a lot of things my client was investigated for.”

There are a few differences: Sternad’s fraud amounted to $81,486. Arrojo, who was cash-strapped like Sternad, probably spent less than $22,400.

Sternad filed fraudulent campaign-finance documents. Arrojo didn’t file those reports at all.

Sternad is suspected of being a plant to help then-Congressman David Rivera bash Garcia in 2012. Sternad, a Democrat, used the same mail and printing vendors as the Republican Rivera.

When the Miami Herald and El Nuevo Herald interviewed the mail house used by Rivera and Sternad, the owner told the Herald that Rivera and a friend were behind Sternad’s campaign. Rivera denied the charge, but the FBI began investigating and Sternad was soon convicted.