DEPTFORD, N.J. (CBSNewYork/AP) – A New Jersey woman is accused of trying to kill her grandmother by poisoning her with antifreeze.

Anna Castagna, 43, of Brooklawn is charged with attempted murder and aggravated assault. She is being held on $250,000 bail.

She was living at a rehabilitation center in Deptford when Castagna gave her antifreeze on Sunday, Aug. 19, authorities said.

According to the Gloucester County Prosecutor’s Office, 88-year-old Mary Groatman is Castagna’s grandmother by marriage.

Sources reported that while Castagna was being interviewed by police in the Brooklawn home she shared with her husband and Groatman, she became unresponsive and had to be transported to Underwood-Memorial Hospital herself, according to a report on

Castagna’s husband is not named in the investigation.

Groatman is currently on life-support and is listed in critical condition.

(TM and © Copyright 2012 CBS Radio Inc. and its relevant subsidiaries. CBS RADIO and EYE Logo TM and Copyright 2012 CBS Broadcasting Inc. Used under license. All Rights Reserved. This material may not be published, broadcast, rewritten, or redistributed. The Associated Press contributed to this report.)

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