Two explosions at a small-town Iowa gas station Monday led to two people being hospitalized.

Authorities in western Iowa received several calls about 8:30 a.m. directing first responders to the Earling Standard station at 209 Railway St., Shelby County Sheriff Neil Gross said. At the Earling gas station, officials found two people — an employee and customer — who had escaped the building but were injured by the blast.

Both of the people were taken to a Mercy medical center in Harlan, where one of them was then flown to an Omaha hospital, Gross said. Neither person's injuries are currently considered life-threatening. One of those involved has already been treated and released.

"A second explosion did cause a second large mushroom cloud" that was visible for many people in the area, Gross said. He said it's possible that was caused by an ignited gas tank, but officials are not sure yet. No injuries were reported as a result of the latter blast.

Seven different area fire departments responded to the scene and no firefighters were injured. Gross said the fire marshal's office and sheriff's department are investigating, but a cause has not been determined.

Video footage captured by KETV showed the windows of nearby homes shattered by the blast.

Earling is a village of about 400 people located about 110 miles west of Des Moines.

Information from the Associated Press was used in this article.