PLAINFIELD, N.J. » Authorities in northern New Jersey say a woman whose body was found with her 3-month-old twins, who were dehydrated but responsive, died of natural causes.

Plainfield Police Capt. Edward Santiago told The Star-Ledger today that an autopsy confirmed Alice Jackson died of natural causes, but they are still waiting for toxicology results.

Officers on Wednesday responded to a call from a relative concerned that he hadn’t heard from the 39-year-old Jackson in days. Jackson was found dead on her bed in her Plainfield apartment. They believe she had been dead for days when she was found.

Her twin girls remained hospitalized today, in stable condition.

The discovery comes 10 days after police in nearby Union discovered a malnourished toddler chain-locked inside an apartment with his dead mother.