CLEVELAND -- Hundreds of gallons of dangerous toxins were stopped from going into the Cuyahoga River after an explosion at a hazardous materials plant, NewsChannel5 reported. Ohio's Environmental Protection Agency said the waste contained more than 1,700 gallons of acids and oils.

The fire and explosion at the General Environmental Management hazardous materials plant let the waste loose on Thursday. GEM treats hazardous chemicals from industrial waste.

The EPA said the toxins could have poisoned the river. The potential danger of the toxins that the fire released into the air has not yet been determined, officials said.

Explosion Sparks Blaze At Hazmat Facility

Investigators said welding was being performed on a tank filled with methanol and acetone -- items that are used in products such as nail polish -- when the explosion happened.

Six people were injured in the blast, and three remain hospitalized.