A 66-year-old nursing home patient died after being bitten hundreds of times by fire ants that swarmed over her while she lay in bed.

Nell Rein, who had Alzheimer's disease, was found covered in fire ants when employees checked on her during the early morning of Aug. 30. She died four days later from heart failure brought on by physiological stress, according to her physician.The death has prompted a grand jury investigation into the Silver Cross Nursing Home in Brookhaven for possible criminal prosecution.