FRISCO, Texas (AP) – Police in suburban Dallas say a woman suspected in the January death of her 10-year-old son appears to have killed her husband before committing suicide last month at their home.

Frisco police on Wednesday released the findings of autopsy reports showing Pallavi Dhawan died from drowning and toxic levels of a drug commonly found in cold and other medications.

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The autopsy determined that her husband, Sumeet Dhawan, died of blunt force injuries to his head and toxic drug levels. His death is ruled a homicide.

Frisco police spokesman Benito Valdez says no other suspects are being considered. The couple’s bodies were found Sept. 3.

Authorities continue to analyze a note found at the scene.

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Pallavi Dhawan at the time was being investigated in the death of her son, Arnav.

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