A Brooklawn, New Jersey woman is in custody after allegedly trying to poison her grandmother with antifreeze.  43-year-old Anna Castagna is charged with two counts of attempted murder and one count of aggravated assault in connection with the alleged incident which left 88-year-old Mary Groatman in critical condition on life support.

Antifreeze (Flickr: PinkMoose)
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At the time of the poisoning, which is alleged to have occurred on Sunday, August 19,  authorities say Groatman had been residing at a rehabilitation center in Deptford, New Jersey.

An investigation is underway by the Gloucester County Prosecutor's Office in conjunction with the Deptford Township Police Department.

There is no word on a motive.  Castagna is in custody in Gloucester County Jail on $250,000 cash bail.

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