At National Commodity and Derivatives Exchange, refined soya oil for delivery in October month declined by Rs 3.35, or 0.59 per cent to Rs 562.60 per 10 kg with an open interest of 88,360 lots.
Also, the oil for delivery in November contracts shed Rs 2.25, or 0.40 per cent to Rs 560 per 10 kg in 38,620 lots.
Analysts said besides adequate stocks on higher supplies from producing regions in the physical market,sluggish demand kept refined soya oil prices lower at futures trade.