The FBI has taken possession of Rep. Andy Ogles’s (R-TN) cellphone as part of its larger investigation into discrepancies with his campaign finance reporting, the Tennessee Republican confirmed Tuesday.

Ogles said he has been under investigation by the Federal Election Commission regarding “mistakes in our initial financial filings,” which the first-term congressman said he believes is also at the center of the FBI investigation. Ogles said he would cooperate with both inquiries.