A western Kansas woman has died from injuries she suffered in a house explosion that also claimed her two sons.

KWCH-TV reports Via Christi Hospital in Wichita confirmed Tuesday Kelly Unruh has died. She was injured when her family’s home in Plymell, near Garden City, exploded on June 28.

Her 17-year-old son, Spencer, died in the blast. And 14-year-old Ryan Unruh died July 9.

Garden City Fire Chief Allen Shelton has said the explosion was caused by a concentration of natural gas in the home. The explosion is being investigated as an accident.

An Unruh Family Memorial fund has been established at Price and Sons Funeral Home of Garden City.