I have received a quite a few letters in mail (I don't know how they got my address) like this last few years. They are know as "Nigerian letters" to FBI and RCMP. They are nothing but scam. I personally contacted local FBI office and RCMP (most of them originate in Canada) and they asked me to send the letters to them and which I did. Both law enforcement agencies have task forces to deal with "Nigerian Letters." So, please don't fall for this Nigerian scam.
P.K. Dass
