How can I get details of a property owned in Nigeria by my ex?

My ex partner has lied to the Csa about how much he earns saying he earns £50 a week. The Csa have decided that he must pay me just £5 a week. He works cash in hand as a taxi driver in Central London so he's definitely not earning that when we were together he was bringing home £1600 minimum a week he was working seven days and some nights a week. He puts all his money into a nigerian bank account so nothing can be proved, I know he has a home in Nigeria I don't know the address. Can anyone kindly help me by telling me how I can find property details or ownership details as I need it to prove to the court he does have assets. Thank you in advance for any help anyone can give me