The most common and most likely answer to this crossword clue is the 8 letter word LINESMEN
I've seen this crossword clue in Financial Times
L
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More clues leading to the result LINESMEN
Buddy explains!

The straight part
We know that "Officials" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case officials = linesmen.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 LINESMEN mean?
LINESMEN noun- An assistant referee.
- A male line judge.
- An official whose primary task is to watch the blue line and determine when there has been an offside.
- An official whose primary task is to determine whether there has been a line of scrimmage violation.
- A person employed to work on electrical lines; a lineman.
- A private in the line.