Germany’s Deutsche Bank says it has agreed a $7.2bn (£5.9bn) payment to US authorities over an investigation into mortgage-backed securities. The sum, which needs final approval, is far lower than the $14bn the US had asked the bank to pay in September. That looming fine had caused concerns that a failure of the bank could pose a risk to the global financial system. The sale of residential mortgage-backed securities played a significant role in the 2008 financial crisis. Several banks in the US have been subject to investigations over allegations of giving mortgages to unqualified borrowers, then repackaging those loans as safe investments and selling the risk on to others. The inquiries related to deals done between 2005 and 2007. Meanwhile, Credit Suisse has said it has agreed a $5.28bn deal to settle its own dispute with US authorities over mortgage-backed securities. The Swiss bank will pay US authorities $2.48bn, and will also give consumers $2.8bn in compensation over the next five years.