Japanese phrase
___に通報します！ ___ ni tsū hō shi ma su
Meaning
I will report it to ___!
When to use it
States a firm plan to alert an authority. The expression is direct, serious, and stronger than simply saying that the matter will be discussed.
Example dialogue
近所で火事です。 kin jo de ka ji de su
There is a fire nearby.
消防署に通報します！ shō bō sho ni tsū hō shi ma su
I will report it to the fire department!