The most common and most likely answer to this crossword clue is the 7 letter word CORONER
I've seen this crossword clue in The Guardian
C
O
R
O
N
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R
More clues leading to the result CORONER
- Person investigating death finding embarrassing situation involving loveĀ
- Awkward situation about old official at inquest
- Angle to trap old and stiff examiner
- Investigator given a ring in awkward situation
- Court official, firm one belted by bishop?
- Head of organisation is in control, and that's official
- One finds reason for passing nothing during recess
- Legal figure with circle entering predicament
- Public official in awkward situation admitting nothing
- Investigator of death trap concealing nothing
Buddy explains!

The straight part
We know that "Investigator of death/Investigator of death" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case investigator of death/investigator of death = coroner.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does CORONER mean?
CORONER noun- A public official who presides over an inquest into unnatural deaths, cases of treasure trove, and debris from shipwrecks.
- A medical doctor who performs autopsies and determines time and cause of death from a scientific standpoint.
- The administrative head of a sheading.