Mom, 4 kids found dead in Iowa home

• Story Highlights
• NEW: Unclear how victims died; police say they suffered trauma, but no shots heard
  
• Woman's husband, Steven Sueppel, and family van missing, police say
  
• Wreck 9 miles away may involve the van; vehicle on fire, making it hard to ID
  
• Sueppel was indicted last month on charges of embezzling $560K from bank
  
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