Thousands paid tribute to murdered Gdansk mayor Pawel Adamowicz at his funeral Saturday, amid outrage over his stabbing six days earlier.

Pawel Adamowicz, the 53-year-old mayor of Gdansk, Poland, has died after he was stabbed in the heart at a charity event.

Gdansk Mayor Pawel Adamowicz was attacked with a knife while he stood on stage, held his belly and collapsed during the “Lights to Heaven” fundraiser organized by the Great Orchestra of Christmas Charity, Poland’s most important charity.