Arnold woman was arrested at south county Walmart earlier this month.
Antonio Ward says suspects can be seen lighting gas poured through mail slot.
Dramatic 14-cent per gallon decline over last seven days.
Expert: St. Louis prices dropping three times faster than national average.
API: Keystone XL would pump 800,000 barrels of oil a day into US.
The statewide average for March was $4.10, according to the monthly survey by the Triple-A Chicago Motor Club.
State officials around the country are looking for ways to give consumers a break from rising gas prices.
A woman walked into Harrah’s casino in Maryland Heights Thursday morning armed with a gas can.
Check out these tips from EcoMedia on how to save energy on the road, which in turn could help you spend less on gas.
Many stand accused, including oil companies, the president, Congress, speculators on Wall Street and worries that the earth is running out of oil.