German Chancellor Angela Merkel’s longtime rival Friedrich Merz announced on Tuesday that he tested positive for coronavirus and was under self-quarantine at home.

The 64-year-old politician, who has been campaigning to lead the Christian Democratic Union (CDU) at a congress planned for this year, said on Twitter that he had mild to moderate symptoms.

“I will be in home-quarantine until the end of this week,” Merz said, and added that he cancelled all his appointments.

Last week, two lawmakers from the liberal Free Democratic Party (FDP) tested positive and were told to stay in their homes under self-quarantine.


Read more: Merkel rival Merz tested positive for coronavirus