Gas prices around Arizona continue to fall. Triple-A Arizona says the average price of gas in the state fell over seven-cents a gallon to $2.32. In Flagstaff, the average price of gas fell nearly four cents from last week to $2.46 a gallon. Most stations are selling gas for $2.45 a gallon and lower. In Prescott, the average price of gas fell over seven-cents a gallon last week to $2.48 a gallon. Some stations are selling gas for $2.39 a gallon with Costco leading the way at $1.99 a gallon. Officials say an increase of supply and lower oil prices is driving prices lower at the pump.