Investigators are seeking the cause of a fire that destroyed a vacant flour mill and several rail cars in southwestern Kansas.

KSNW-TV reports  that 75 firefighters and 15 trucks responded after the fire broke out in Liberal around 7:30 p.m. Sunday. Some crews were still at the scene Monday putting out hot spots.

The fire began in an old flour mill next to the Equity Grain Elevator. The elevator was spared, but the flames spread to a fertilizer warehouse.

No injuries were reported.