The offices are located in Cleveland, and the oligarch in question is Igor Kolomoisky--aka Ihor Valeriyovych Kolomoyskyi. Kolomoisky is a pretty unsavory character, tied to money laundering, contract killings, and--as if that weren't bad enough--Dems!
The only details available regarding the investigation so far are a bit slim:
Federal authorities in Cleveland have been conducting a wide-ranging probe involving Ukrainian oligarch Igor Kolomoisky that has been ongoing for quite some time. Kolomoisky is a principal of the Privat Group, a large Ukrainian business company, and principals of the company are also part of Optima.
...
Kolomoisky and a fellow Ukrainian billionaire formed PrivatBank in the early 1990s. It became one of the Ukraine’s key financial institutions, according to Forbes. The Ukrainian government nationalized the bank in 2016 after an investigation suggested there was large-scale fraud over a decade-long period, Forbes reported.
The financial news outlet places Kolomoisky’s net worth at about $1 billion. He remains a complicated political figure in his home country. He is a former governor of Ukraine’s Dnipropetrovsk region.
This can't come as good news for Biden, for the Dems in general, many of whom (including Pelosi and Schiff) can be tied to dirty Ukrainian money, and especially not for Debbie Mucarsel-Powell, D-Fla. Mucarsel-Powell was last seen attempting to get the goods on AG Bill Barr, who swatted her to the sidelines. However, back in December, 2019, this link between Mucarsel-Powell and Kolomoisky surfaced: