WILMINGTON, Del. (CBS/AP) — President-elect Joe Biden’s son Hunter says he has learned from federal prosecutors that his tax affairs are under investigation. The investigation by the Delaware U.S. Attorney’s office was disclosed in a statement released Wednesday by President-elect Biden’s transition office.

“I learned yesterday for the first time that the U.S. Attorney’s Office in Delaware advised my legal counsel, also yesterday, that they are investigating my tax affairs. I take this matter very seriously but I am confident that a professional and objective review of these matters will demonstrate that I handled my affairs legally and appropriately, including with the benefit of professional tax advisors,” Hunter Biden said in a statement.

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Joe Biden and Kamala Harris’ team also released a statement, saying the president-elect is “deeply proud of his son, who has fought through difficult challenges, including the vicious personal attacks of recent months, only to emerge stronger.”

Hunter Biden has long been a target of President Donald Trump and his allies, who have accused him of profiting off his political connections. Trump and his supporters also raised unsubstantiated charges of corruption related to Hunter Biden’s work in Ukraine at the time his father was vice president and leading the Obama administration’s dealings with the Eastern European nation.

The disclosure of the federal investigation led by the U.S. attorney’s office in Delaware comes at an awkward moment for the incoming president, who is assembling his Cabinet. His pick for attorney general could have oversight of the investigation into the new president’s son if it is still ongoing when Biden is sworn in on Jan. 20.

Biden’s younger son has been caught up in controversies for years. While his father was vice president, Hunter joined the Naval Reserve only to be discharged after testing positive for cocaine in his system, later revealing a yearslong struggle with addiction.

He also joined the board of Ukrainian energy company Burisma in 2014, sparking concerns about the perceptions of a conflict of interest given the elder Biden was deeply involved in U.S. policy toward Ukraine. A Republican-led Senate investigation did not identify any policies that were directly affected by Hunter Biden’s work.

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Hunter Biden’s attorneys did not immediately return phone messages seeking comment.

(© Copyright 2020 CBS Broadcasting Inc. All Rights Reserved. The Associated Press contributed to this report.)

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