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GREEN VALLEY RANCH (KDVR) — The Denver Fire Department says five people died in a house fire on Wednesday morning. An arson investigation is underway.

A neighbor woke up to massive flames engulfing the home.

A toddler, a child and 3 adults died in the fire. Three others escaped by jumping from the second story.

Firefighters found evidence of arson. Police are also investigating this as a homicide.

“They were very quiet. They never really came out of their house. The only time they came out they were just really quiet. They never had any problems. They were just very honest, true neighbors. You know what I mean?” shared Jordan Sims.