Speaker of the Polish Senate Grodsky said that he received a package with explosives and threats 
name and found explosives and a threatening letter in it. He told about this on his Twitter account.
“This is what the industry of contempt and persecution of political opponents leads to,” the politician wrote. According to Grodsky, the parcel was announced by the relevant services, they are looking for the sender.
According to the Polish radio station RMF, the parcel was found on Friday at 15:00 local time (17:00 Moscow time), an unidentified substance was found in it … We are talking, presumably, about nitrocellulose gunpowder – it is used in small arms and artillery. The sender signed up with a forest guard.
In October 2018, it was reported that parcels of bombs were being sent to the United States. They were received by billionaire George Soros, former US President Barack Obama, former Secretary of State Hillary Clinton and the editorial staff of CNN.