Pirate or not; affiliated or not; the incident happened in your space therefore the responsibility is yours.
As to flying in Rheinlander space I strongly suggest you stay out of our way. Any attempt to approach, detain, scan or otherwise impede a TBF vessel on official business of the Empire will result in said vessel being destroyed. Any RM vessel, where ever it is found, is to be considered hostile and will be destroyed. Any vessel attacking a TBF vessel will be considered allied with Rheinland Military and need I say it, destroyed.
Again vessels the show no hostility toward TBF will be unmolested and free to go about there business. Some may even be granted favors (this has already happened).
Any further blood shed and lost of life can be avoided by paying restitution in the amount of 45 million to any TBF member. This is no joke! There are more than two TBF members flying here as we do not always wear fleet tags.
As for your allies, you may find them distancing themselves from an organization that can not control the happening within its own borders. How weak you have become that you can not even intimidate a simple two Warrior RECON team of the Empire. If you were Klingon we would have euthanized you long ago.