確認 かくにん情報 じょうほうではありませんでした
mikakunin jōhōdewa arimasendeshita

Noun
Desu Copula

The polite, past negative form of 未確認情報

1. It was not unconfirmed information.; It wasn't unconfirmed information.

Past/Perfective
Negative
Polite
Formal Register