Mike Wallace interview with Shah of Iran in 1976

Veteran journalist Mike Wallace, famed for his tough interviews on US news programme 60 Minutes over four decades, has died aged 93.

A spokesperson for CBS said he died on Saturday and had been in declining health in recent years.

Wallace was one of the original hosts of 60 Minutes when it began in 1968 interviewing the likes of Martin Luther King, John F Kennedy, Malcolm X and Yasser Arafat.

In 1976 he interviewed the Shah of Iran, Mohammad Reza Pahlavi, and asked him whether he endorsed torture.

Video courtesy of CBS