Mamaroneck mom used helium to try to suffocate son, 4, source says
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A Mamaroneck mother accused of killing her 4-year-old son used helium in an attempt to suffocate the child, a law enforcement source told Newsday.
That might not have killed the child, so she then may have tried some other way to smother him, the source said.
An official determination as to how Jason Reish died could take up to six weeks as police await the results of toxicology tests.