Crude prices fell sharply on Monday, extending losses from late last week partly due to concerns about the spread of the delta variant of coronavirus. Crude for September delivery fell $2.84, or 4.2%, to $65.43 a barrel. Brent oil fell $2.76, or 3.9%, to $67.93 a barrel. U.S. oil futures booked the sharpest weekly slump in 9 months on Friday as the dollar rallied on the back of strong jobs data. Spreading cases of the delta variant have also sparked concerns of a growth slowdown, which would impact oil demand. Goldman Sachs slashed its China third-quarter growth forecast, which lowered its annual view, due to more cases of COVID-19.