Brent crude oil, the international benchmark fell to a more than 10-year low while West Texas Intermediate crude was closing in on a roughly 7-year low, settling below $34 a barrel. 

First, the scoreboard:

Dow: 16,906.5, -252.2, (-1.4%)

S&P 500: 1,990.3, -26.5, (-1.3%)

Nasdaq: 4,835.8, -56.7, (-1.2%)

WTI crude oil: $33.97, -5.5%