NEW YORK, Aug. 21 (Xinhua) -- US oil prices rose 1.4 percent on Tuesday on optimistic mood from capital market and weaker US dollars against main currencies.

File photo: VCG

The West Texas Intermediate (WTI) for September delivery picked up $0.92 to settle at 67.35 dollars a barrel on the New York Mercantile Exchange.

International oil prices recorded growth for the fourth day in a row following significant drop in earlier days.

Market players continue to bet on tight supply from US sanctions on Iran. The continuous weakening of US dollar also bolsters the uptrend of oil prices.

Meanwhile, Brent oil prices for delivery in October also gained 0.58 percent with settlement price at $72.63 per barrel on Tuesday.