The most common and most likely answer to this crossword clue is the 6 plus 7 letter word SEARCH WARRANT
I've seen this crossword clue in The Daily Telegraph
S
E
A
R
C
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W
A
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A
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T
More clues leading to the result SEARCH WARRANT
- At sea, crew has complete order
- Three players introducing bridge complete legal document
- Somehow hears about cold war tirade that allows the force to go in
- Law examination paper
- Authorisation for investigation coming from chaser around with battle cry?
- Document the police may need to look over
- For sanction of invasion and appropriation, look in Hitler’s 1939 diatribe, perhaps
- Policeman’s examination paper?
- Hunting licence
- Irish, for example — and runs church with complete investigative authority
Buddy explains!
The straight part
We know that "Document the police may need to look over" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case document the police may need to look over = search warrant.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.