US stocks tumble as market reacts to Greek crisis with biggest fall in two years

Dow, Nasdaq and S&P suffer heavy losses and follows even bigger falls across Europe as debt drama intensifies

US stock markets on Monday suffered their biggest fall in two years as fears that Greece could drop out of the eurozone spread across the world.

The Dow Jones Industrial Average ended the day down 2% to 17,597 points - the biggest one-day fall since June 2013 and wiping out all of the gains made so far in 2015. The Nasdaq andS&P 500 also suffered heavy losses, closing down 2.4% and 2.1%, respectively. Financial and consumer-focused businesses suffered the largest losses.