In September the Russians accused the Ukrainians of having repairing downed Geran drone airframes at the Lviv LORTA plant, transferring them to Yavoriv, and launching them unarmed into Poland. They presented various evidence like serial numbers, photographs of silver-tape repairs, claims that a Ukrainian SIM-card was used, lack of impact destruction, etc.
What's true though? I don't believe that I have a way to find out.
Usually you can find out. There are probably radar records showing them coming from Russia. But people aren't that interested and it's hard to keep up with the firehose of falsehood coming out of Russia constantly.