Two toddlers dead in murder/suicide

A 3 year old girl and an 18 month boy are dead in a murder/suicide in Fresno. The mother of the children died of a self inflicted gunshot wound as well as a man inside the apartment. From the article:

Neighbors, who did not want to be identified, said they have not seen or heard of any problems at that apartment. The couple were quiet and the father often brought his children to play in the complex's small playground, one neighbor said.

Toddlers are too young to die from gunshot wounds.