Usurious interests are Haram, as Allah says,
...whereas Allâh has permitted trading and forbidden Ribâ (usury).
A person whose money includes Riba should get rid of it by spending it on what is beneficial to the Muslims, including constructing roads, establishing schools and giving it to the poor. However, it is impermissible to build Masjids using usurious money. A person should not take interest or continue taking them. (Part No. 13; Page No. 355)
May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.