Check out the link I've posted below, it may point you in the right direction.
Otherwise, contact the local police departments for the areas you're concerned about.
In Los Angeles, they won't give a RealtorÂ® the information if it concerns a purchase; officers told me that's for liability purposes!
Joe Connolly, RealtorÂ®
323 481 6299 c
Keller Williams Realty - Wilshire
5900 Wilshire Blvd.
(Across from LACMA & La Brea Tar Pits)
Los Angeles CA 90036