419 Scams set in Mauritius
Any spam email from a person claiming to be a government official or bank employee in Mauritius who is offering you a part in a million dollar transaction is almost certainly a scam run by a gang in Nigeria. Since Nigeria has develeoped an infamous reputation for scams, scammers have started using names of other countries instead, even though the actual source of the emails tends to be Nigeria.
As in all 419 scams the object of the scam is to get the victim to send money to criminals who promise to send a much larger amount to the victim later, which never happens.
Dont't trust any images of passports, bank documents, government certificates, etc. presented to you by the scammers. These are all fake.