About 10 months ago a serious incident occurred with two jets on final approach to a regional airport in the UK. This incident was reported to the Air Traffic Manager who failed to report further.
Reported by whom ??
The pilots and controllers involved have a Mandatory Occurrence Scheme which they can (and indeed on occasion are legally obliged to) use to make the necessary reports themselves. They can make the report direct to the CAA and be independent of any management chain.
If it was a member of the public who made their concerned 'report', then the professionals involved obviously had no concerns and there was no 'MOR' incident. End of story.
More detail required if you want the real answer to your query.