A pump at a gas station exploded in a ball of fire following a traffic crash in the U.S. state of Texas Wednesday, though no casualties were reported, according to local media. The explosion happened Wednesday morning near a gas station in Harris County, the Houston Chronicle website reported. Three vehicles were involved in the accident, which occurred at the intersection of two roads, resulting in one vehicle colliding with the gas pump and bursting into flames. Local TV footage showed fire engulfing the vehicle and large columns of black smoke billowing into the sky. Assistant Chief Deputy of the Harris County Office, Mark Herman, told the Chronicle no injuries were reported, though a woman in the station at the time of the blast had an unspecified medical emergency and was treated at the scene. Details of her current condition have not been released. The blaze was extinguished by firefighters hours later. Herman said investigators are trying to determine what led to the crash.