A DNA test revealed that Hunter Biden, former Vice President Joe Biden’s youngest son, is the father of a baby in Arkansas that he has denied having.

Hunter Biden claimed earlier this year that he did not father a child with an Arkansas woman while he was living with the widow of his deceased brother. Biden agreed to take a DNA test to prove that he was not the father.

The document, filed on Wednesday in Independence County, Arkansas, on behalf of the baby’s mother, Lunden Alexis Roberts, said the DNA test determined that Biden was the baby’s father “with scientific certainty.”

According to the filing, Hunter Biden “is not expected to challenge the results of the DNA test or the testing process.”

In May, Roberts, who said she and Hunter Biden’s relationship resulted in a child born in August 2018, filed a petition for paternity and child support and a request for him to pay health care for the child, according to the Daily Beast.

Biden’s relationship history is complicated. In 2017, he finalized his divorce from Kathleen Biden, his wife of more than 20 years, after she accused him of spending money on drugs and strip clubs.

That year, he started dating Hallie Biden, his brother Beau’s widow and the mother of his niece and nephew. Page Six reported in April that they had recently broken up—meaning the baby was born during their relationship.

To add to the complicated situation, he married Melissa Cohen in a surprise wedding this May.

Hunter Biden has been under intense national scrutiny over the past several months, relating to his prior business dealings and the involvement of his father in certain countries where Hunter Biden was conducting business.

The most notable case was Hunter Biden’s hiring by Burisma, a Ukrainian gas company that has been accused of corruption, and his father’s involvement in Ukraine.

In 2016, Vice President Biden threatened Ukrainian President Petro Poroshenko that if he did not fire Prosecutor General Viktor Shokin, who was investigating Biden, that he would not give Ukraine $1 billion in aid that it was expecting to receive.

“I said, ‘You’re not getting the billion.’ I’m going to be leaving here in, I think it was about six hours. I looked at them and said: ‘I’m leaving in six hours. If the prosecutor is not fired, you’re not getting the money,’” Biden told an audience last year as he recalled the incident from 2016. “Well, son of a [expletive removed], he got fired. And they put in place someone who was solid at the time.”