Odd drawing hanging on pole

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I snapped the above photos this morning in a Palo Alto, CA train station parking lot. There was no stickers, fliers, or any other material hanging on any of the other poles in the area. I know that taping up a paper drawing isn't as "permanent" as traditional graffiti, but I like the idea of hanging art in unusual public places. I also dig the drawing. I hope nobody takes it though so that others can enjoy it. Click on the images to see them larger.

UPDATE: In the comments, JAMES and an anonymous commenter inform us that this is a sketch of a suspect wanted in connection with attacks in the area. Odd without any context or information on the poster. See here.