The American Meteor Society and the International Meteor Association received over 60 reports so far about a fireball event over the Eastern Poland on Saturday, October 31st 2015 around 18:05UT. Observers from as far the Netherlands and Austria reported seeing a bright light in the sky. Below is a heat map of the witness reports.
Fireball over Poland
© American Meteor Society
AMS Event#2824-2015 – Heatmap.
The preliminary estimated trajectory plotted from the witness reports shows the meteor was traveling from the SE-NW and ended its (visible) flight few miles east of the German Border.

Fireball over Poland_1
© American Meteor Society
AMS Event#2824-2015 – Preliminary Estimated Trajectory.
This event has been on camera:

If you witnessed this fireball please fill out an official fireball report.