(CNN) - Former Republican Party Chairman Jim Greer is denying allegations he was involved with leaking Senate candidate Marco Rubio's credit card statements to the media.
The vigorous denial comes a day after Rubio charged Greer likely played a key role in supplying statements to Florida Gov. Charlie Crist's campaign showing Rubio charged personal expenses on a party credit card while he was Florida's House speaker.
Greer, the longtime ally of Crist, resigned his post as head of the state Party in January amid criticisms over his management of party money and his involvement in contested primaries. Several of Rubio's backers had called for Greer's resignation for months.
"While some continue to disrupt and try to destroy the Republican Party, I wish to be clear, I did not release or leak Marco Rubio's Amex statements to the media," Greer said in a statement to the St. Petersburg Times. "It is my hope that those individuals who seem committed to attacking fellow Republicans and our Party will stop before we lose it all. '
The credit card records, obtained by the St. Petersburg Times/Miami Herald, indicate Rubio made several personal purchases with the state party's corporate credit card when he was Florida's House speaker between the years of 2005 to 2008. Rubio immediately defended his actions and charged Greer and the Crist campaign were behind the media report.
A spokesman for Crist did not address Rubio's allegation that their campaign was behind the leaked documents, but said the credit card bills show "a clear pattern is emerging in Speaker Rubio's unfortunate behavior."
The expenses in question included repairs to his family car, items at an Apple Store, grocery bills, and purchases from a wine store close to Rubio's home. In his letter to the state GOP chairman Wednesday, Rubio contends GOP officials fully permitted him to put personal expenses on the card so long as he reimbursed the party for them.
Contending that he reimbursed the party for all his personal expenses, Rubio said he paid the party more than $16,000 for expenditures not related to party business. Rubio also said he used the card for personal expenses under knowledge and permission from the party, though a party spokeswoman said credit cards are generally expected to be used only for business purposes.
Crist is running for the senate this year rather than for a second term as governor. Rubio trailed Crist by double digits last year but recent surveys suggest that Rubio now has a slight lead in the battle for their party's senate nomination.