Alan Greenspan, longtime head of the US federal reserve, dies aged 100

Greenspan served under the presidencies of Ronald Reagan, George HW Bush, Bill Clinton and George W Bush

Alan Greenspan, the influential economist who steered US monetary policy during his five terms as chair of the Federal Reserve under four presidents, has died aged 100, according to the Fed.

In a statement that she shared with NBC News, Andrea Mitchell - Greenspan's wife and a correspondent of the network - said he died from complications of Parkinson's disease.