How do I report someone using 360...?

I'm after recieving an email from someone contacting me through yahoo 360, claiming to be a manager in a bank in Nigeria. They are claiming that a man with the same nationality as me and with the same surname as me, and his whole family were killed in a car crash four years ago, leaving behind a sum of $18,500,000, and that they can't trace an relatives. He wants me to come forward and claim to be a relative to get the money and me and him can share it, if I forward on my name, address, date of birth, occupation and phone number. I wasn't born yesterday and know this is fraudulant way to get my details,but I am raging that someone is using the 360 to try and do this. How do I report this abuse to Yahoo??