While some authority from Finland Embassy was replying the questions,he/she avoided to comment about ambassador's attitude.The authority seemed angry because of Turkish guests leaving reception late.
Is there anything to be corrected in these sentences.
While some authority from THE FINNISH Embassy was replying TO the questions, S/HE AVOIDED COMMENTING ON the ambassador's attitude. THE SPEAKER seemed MORE angry because of SOME Turkish guests leaving THE reception late.
You can say 'spokesperson' instead of 'authority'.