Rudy Giuliani has tested positive for Covid-19, according to President Donald Trump.

Trump tweeted Sunday that Giuliani, his personal attorney, tested positive for the virus. He said that Giuliani “has been working tirelessly” trying to prove that Trump was the real winner of the November presidential election (he wasn’t).

“Get better soon Rudy, we will carry on!!!” the president tweeted.

Giuliani’s reportedly positive test result comes after his son Andrew Giuliani, as well as others linked to the White House, became infected with the virus. Trump himself was infected in the fall.

This is a developing story. Check back for updates.