Nephew of ex-Army chief of staff drowned mother in backyard pool, prosecutor says

A Long Island man drowned his mother in the family’s pool after she scolded him for not taking his medication, officials said Thursday.

Denis Cullen, 23, of Lloyd Harbor, N.Y., was arraigned on a charge of second-degree murder in the death of his mother, 63-year-old Elizabeth Cullen. He was held in lieu of $5 million cash bail or an $8 million bond.

“This is a son who killed his mother, and the way he killed her, the way he describes how it was done, is chilling,” Suffolk County Assistant District Attorney Robert Biancavilla told reporters.

Biancavilla said the two had argued Wednesday morning over Cullen not taking his medication. The prosecutor said the argument escalated to the point where she poked him and Cullen put his mother in a headlock, walked her to the deep end of the pool and held her until she stopped struggling.

“He said she struggled violently and he was surprised a woman of her stature could struggle as much as she did,” Biancavilla said.

It was not clear what type of medication Cullen was supposed to be taking.

After the arraignment, defense attorney Steve Fondulis described his client’s demeanor as “calm.”

“I have to determine if he had a psychiatric background. I have to determine if he’s under a doctor’s care,” Fondulis told Newsday.

Elizabeth Cullen was the daughter of Maj. Gen. George William Casey, who was killed in a 1970 helicopter crash in Vietnam. Her brother, George William Casey Jr., is a retired general who last served as Chief of Staff of the U.S. Army from 2007 until 2011.

The Associated Press contributed to this report & picture taken from By Louise Boyle In Cold Spring Harbor, New York and Wills Robinson For

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