Owsiak is the public face of the Great Orchestra of Christmas Charity (WOŚP), known for its annual fundraising events supporting healthcare that regularly attract massive public support.

Warsaw police said that an investigation was ongoing but did not provide further details.

“Officers from the Warsaw Metropolitan Police have initiated proceedings regarding suspected public incitement of hatred against Jerzy Owsiak and the WOŚP Foundation via the internet, on YouTube, and social media,” Jacek Dobrzyński, a spokesman for the interior ministry, said on Wednesday.

Owsiak said in a social media post that the threats against him are "very specific, involving a bomb.”

“If I live to see tomorrow—and this is no joke—the Foundation and I will continue our work,” he added.

Owsiak criticized media linked to the right-wing opposition Law and Justice (PiS) party, accusing them of fueling hostility against him and his liberal views.

“The incitement by Republika TV and wPolsce24 resembles the manipulations and hostility directed at the Mayor of Gdańsk, Mr. Paweł Adamowicz, and we know how that ended,” Owsiak said.

Adamowicz, a prominent liberal, was stabbed three times while giving a speech on stage at a WOŚP event in 2019, in a killing that shocked Poland.

The perpetrator was sentenced to life in prison, but the court ruled out political motives as being behind the murder.

Owsiak said: “If I don’t live to see tomorrow, remember how this incitement and these methods, which are a repeat of events in Gdańsk, by a group of hateful people, are destroying what we have all built together for over three decades.”

The Great Orchestra of Christmas Charity was launched in 1993, since when Owsiak has become a household name.