I don't really need to give any sources for this story. It's being covered in every news outlet imaginable and I won't waste your time.
I just want to add, since this is news from a pro-life perspective, that Poland is one of the most pro-life countries in Europe. It recriminalized abortion after the end of Soviet occupation, and is often cited for its success in bringing down the maternal death rate. In recent decades it has stood firm, alongside Ireland and Malta, against abortion advocates in the European Union. Now that so many of its leaders have perished, it is unclear what will happen in Poland's political sphere.
SecularProLife.org expresses its condolences to the families of the victims, and to the Polish people as a whole.