Investing with a partner that deals in interest

We live in a non Muslim country. I have a business in which we take a plot, then develop the building and then sell. Usually it is a partnership deal. I do it with my partner who is a non Muslim. For e.g. he invests 50% of money. I invest 50%. The money he invests is of riba (interest). Since he is a non Muslim, his major part of earnings are giving money on interest to people. So he gets 50% of profit of our business, I get 50%. Since in the investment his 50% invested money is of riba, will it be permissible for me to work with him or not?