BOISE, Idaho (AP) — Officials with Jackson Food Stores say bad gasoline was sold at four stations in southwestern Idaho. Television station KTVB reports that the stations in Boise, Nampa and Meridian had a mix of diesel and gasoline in their unleaded tanks.

The problem was discovered Monday after a local mechanic had several cars towed in and learned they had all filled up at the same station. Jackson Food Stores' CEO John Jackson says it appears a fuel delivery driver mistakenly mixed the diesel into the wrong tanks.

He says the tanks have been flushed and replaced with good product and the company will cover the repair bills. Kevin Merritt with the Department of Agriculture's Bureau of Weights and Measures says the tanks have been tested and are now fine.