A German soccer referee, who recently went viral for proposing to his boyfriend, was attacked outside his home.

Pascal Kaiser stole the hearts of millions last week after he proposed to his fiancé in Cologne’s RheinEnergieStadion during a match in front of 50,000 people. According to the French publication L’Equipe, Kaiser was assaulted in his home by three men late Saturday night into Sunday morning.

The publication wrote that the bisexual referee, prior to the incident, had reported that he was receiving threatening messages, including ones that included his address. Police told him there was no immediate threat. But Attitude reports that 20 minutes after he got off the phone with authorities, Kaiser was attacked while smoking a cigarette in his garden, which resulted in an injury to his right eye.

Carla Antonelli, a Spanish politician and LGBTQ+ advocate, uploaded a post to Instagram in support of Kaiser and shared a photo of his bruised face. “Terrible message, if you make yourself visible, we’ll put you in the closet: Referee Pascal Kaiser, who proposed to his partner before the Cologne-Wolfsburg match, was assaulted at his home. It is known that prior to the assault, the address of Pascal Kaiser’s house had leaked on social media and received direct threats,” her caption reads. “Police intervened after the attack, and Pascal Kaiser is now in a safe place under police protection.”

Kaiser’s Instagram account, and the couple’s account he shares with his partner, are now both locked and private.

Last week, Kaiser got down on one knee and professed his love for his fiancé while delivering a prepared speech, declaring, “I want everyone to see that I love this person. A man. As a man. In football.” After the proposal, FC Köln, a professional soccer team that plays at the field where they got engaged, uploaded a video of the couple’s special moment and wrote in the caption, “Pascal Kaiser is a referee and a huge FC fan. Pascal is queer and came out three years ago. Today, he had a special plan, which FC Cologne supported. Pascal proposed to his long-term partner at the RheinEnergieStadion, but see for yourselves!” The team continued, writing, “Congratulations, you two!”

Kaiser has long been an advocate for LGBTQ+ visibility in sports. As he previously told Schwulissimo, a major German news outlet, “I see this as my mission: to create visibility. To be a voice. And to encourage people who aren’t yet brave enough to speak up,” he said. “I know how lonely it can be to think you’re the only one. I want no one to have to feel that way again.”