The thief's motive

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Across
  1. 2. person who steals
  2. 4. protection against crime
  3. 7. loud warning sound
  4. 10. person who saw the crime
  5. 11. formal questioning by police
  6. 12. valuable items like necklaces and rings
  7. 13. place where the crime happened
  8. 15. proof you were somewhere else
  9. 17. person the police think committed the crime
  10. 19. piece of information that helps solve a crime
  11. 23. number pad used to unlock a door
  12. 24. police officer who investigates crimes
  13. 25. genetic material used to identify someone
  14. 26. strand found as evidence
  15. 27. information used to solve a crime
  16. 28. security cameras that record video
Down
  1. 1. mark left by a finger
  2. 3. people who enforce the law
  3. 5. illegal act
  4. 6. mark left by a shoe
  5. 8. order of events in time
  6. 9. scientific study of crime evidence
  7. 14. person who protects a place
  8. 15. to take a suspect to the police station
  9. 16. strong box for valuables
  10. 18. secret numbers or letters
  11. 20. to get away from danger or police
  12. 21. official description of an event
  13. 22. stealing money or valuables
  14. 26. large planned robbery