The Chesterfield County Department of Fire and EMS have determined the cause of a house fire that left six people dead including four children. Fire crews were called to the 9900 block of Glass Road on April 16 early in the morning after a neighbor called 911. Once they arrived on the scene, firefighters found heavy fire from the first-floor window and immediately went into rescue mode. A second and third alarm was called after hearing from neighbors that there were multiple people trapped inside. Crews requested five additional ambulances. Crews found multiple victims on the first and second floor of the home. Officials said one person was pronounced dead on the scene after being found in a bedroom where they believe the fire originated. Authorities identified that person as 70-year-old Linda Carlton. Chesterfield authorities said the cause of the fire is smoking related which originated from the bed of Mrs. Carlton.