Bayern Munich president Uli Hoeness is being investigated for possible tax evasion after declaring an off-shore account in Switzerland, it was reported on Saturday.
According to German magazine Focus, the Munich public prosecution office is looking into the 61-year-old Hoeness' financial affairs, while no details of the sums involved have been divulged.
"I filed a voluntary disclosure about the account to my accountant at the tax office in January 2013," said Hoeness, who has said he is working closely with the authorities.
"I trust fully on the work of the authorities involved in the case and ask for there to be respectful refrain from further enquiries," said Hoeness.
Bayern host Barcelona in the Champions League semi-final, first leg on Tuesday as the German champions bid to reach their third European Cup final in four years.