In a case like this, that is a bit tricky. This could be Joe (or Jabul) Random Googler in India on a lark. Or it could be something organized, probably at a small level.

Contacting someone in Google Maps might help -- this would at least be a business unit that has some interest in not generating ill will. Google IO is a conference with lot of Googlers. There's a presentation about Google Maps, and if they aren't the right people to talk to, you could probably ask them who a good contact would be: http://www.google.com/events/io/2011/sessions/designing-maps...

That'd be my approach.

PR people are usually a very good contact. News can break 24 hours a day, so they're usually very available. If you're about to spill the beans on something that can be very embarrassing, they will connect you with the right person. If they don't, they're on the hook for cleaning up the mess.

http://www.google.com/press/

I would email abuse@google.com. This is typically how all Internet abuse is handled.

If you want to be particularly thorough, look up the name in abuse.net:

http://abuse.net/lookup.phtml?domain=google.com