WESTMINSTER, Md. (AP) — Investigators say a propane leak is to blame for a building explosion in Carroll County that sent two women to the hospital.

The state Fire Marshal’s Office says Thursday’s explosion was a result of propane pooling in the basement of the building on Silver Run Valley Road near Westminster. Injured in the explosion were 38-year-old Heather Bree Harbin, who had burns to her face and torso. Another woman, 39-year-old Julie Ann Griffn, escaped serious injury but was taken to the hospital as a precaution.