Actually, Googling the subject brings up items that are perhaps hard-to-find, in this case, on Snopes.

http://www.snopes.com/crime/warnings/fakecop.asp

HOAX.

Snopes doesn't seem to allow copy-and-paste, but they do quote an example of the email from 2002. It's been around a while.

The name, numbers dialed, and countries change over a few years (see "Variations")