Oil prices sank to near $72 a barrel Tuesday in Asia, the Associated Press reported. Benchmark crude for October delivery was down 84 cents at $72.26 a barrel at midday Kuala Lumpur time in electronic trading on the New York Mercantile Exchange. The contract fell 72 cents to settle at $73.10 on Monday, after hitting a high of $74.88 earlier in the day. In other Nymex trading in September contracts, heating oil fell 1.5 cent to $1.941 a gallon and natural gas gained 0.2 cent to 4.068 per 1,000 cubic feet. Gasoline dropped 1.6 cent to $1.865 a gallon. Benchmark crude for October delivery was down 71 cents at $72.91 a barrel on the ICE futures exchange.