Crude oil prices closed  lower in futures market on Monday. Light sweet crude oil (WTI) futures fell 0.26 dollar or 0.44 percent to close at USD 59.43 a barrel at the New York-based commodity exchange NYMEX.

Brent crude oil futures declined 0.54 dollar or 0.81 percent to close at USD 66.27 a barrel at NYMEX. Natural gas futures remained flat at 3.010 a gallon at the NYMEX.

RBOB gasoline futures remained flat at 2.041 a gallon at the NYMEX. In refined products, RBOB heating oil futures remained flat at 1.987 a gallon at the NYMEX.