The most common and most likely answer to this crossword clue is the 9 letter word ROBBERIES
I've seen this crossword clue in The Daily Telegraph
R
O
B
B
E
R
I
E
S
More clues leading to the result ROBBERIES
Buddy explains!

The straight part
We know that "crimes" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case crimes = robberies.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 ROBBERIES mean?
ROBBERIES noun- The act or practice of robbing.
- The offense of taking or attempting to take the property of another by force or threat of force.