HOUSTON (AP) — Refining cutbacks due to slumping demand and global political and economic tensions are being blamed for climbing gasoline prices in Texas and nationally.

The weekly AAA Texas price survey released Thursday shows the average price of a gallon of unleaded regular gasoline climbed 6 cents over the past week in Texas to $3.45. The national average price is $3.52, 3 cents more than last week.

The state’s most expensive unleaded regular gasoline this week is found in Dallas and Fort Worth and costs $3.49 per gallon, 8 cents more than last week in Dallas and 9 cents more in Fort Worth. The least expensive is found in Amarillo, where the average price fell a dime to $3.28 per gallon.

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