Factcheck.Org reported in 2019:
"However, there is no evidence that Hunter Biden was ever under investigation or that his father pressured Ukraine to fire Shokin on his behalf.
In May, Lutsenko, then-Ukraine’s prosecutor general, told Bloomberg News: “Hunter Biden did not violate any Ukrainian laws — at least as of now, we do not see any wrongdoing.”
Lutsenko told Bloomberg that the prosecutor general’s office in 2014 — before Shokin took office — opened a corruption investigation against Zlochevsky and numerous others. He said the probe’s focus was Serghi Kurchenko, who owned a number of gas companies, and a transaction that occurred in November 2013, months before Biden joined Burisma.
Bloomberg News, May 16: As part of the 5-year-old inquiry, the prosecutor general’s office has been looking at whether Kurchenko’s purchase of an oil storage terminal in southern Ukraine from Zlochevksy in November 2013 helped Kurchenko launder money. Lutsenko said the transaction under scrutiny came months before Hunter Biden joined the Burisma board.
“Biden was definitely not involved,” Lutsenko said. “We do not have any grounds to think that there was any wrongdoing starting from 2014.”
On Jan. 13, 2017, Burisma announced that “all legal proceedings and pending criminal allegations against its President Mykola Zlochevsky and operating companies of Burisma Group have been closed."
Neither Joe nor Hunter Biden were implicated or charged in Ukraine's
investigation into corruption at Burisma. Reportedly, then President Trump was not pleased with this outcome.