The state agency said Friday that it's received 80 complaints about high gas prices this month, up from just 15 last month.
Indiana's average price for a gallon of regular unleaded is the fourth highest in the nation.
Indiana's recent spike is being fueled by production delays at seven of the Midwest's 10 largest refineries.
The refineries affected have been either hit by technical problems or are conducting maintenance that has lowered output.
Meanwhile the State AG’s office says that they are tracking the situation but so far have not found anything illegal.