Aliko Dangote said he doesn't have a house outside Nigeria, Could it be true?

Africa's richest man, Aliko Dangote says he does not own a house outside Nigeria

"Somebody asked me, how many houses do you have abroad? I said, well, to tell you the good news, I don’t even have a nine-inch block outside Nigeria, and that is the truth. I don’t have a house anywhere abroad.” - he told Senior Media executives during an interview session over the weekend