DA: Mom accused of fatally poisoning son is a liar

WHITE PLAINS, N.Y. - New York prosecutors say a woman accused of killing her 5-year-old son by poisoning him with sodium falsely claimed in the past that she had two other children and a fiance.

The prosecution is asking permission to use the alleged lies as trial evidence. Lacey Spears of Scottsville, Ky., has pleaded not guilty to charges of murder and manslaughter in the January death of Garnett-Paul Spears.

A hearing will determine whether the statements are allowed. Defense lawyers would not comment.

The prosecution also wants to use what it says is evidence of a previous episode of high salt levels.

The little boy died at a New York hospital. Prosecutors say his sodium levels rose with no medical explanation. They believe his mother administered sodium through a feeding tube in his stomach.

CBS New York reports prosecutors have suggested Spears suffered from Muchausen Syndrome by Proxy, a form of medical child abuse where a parent intentionally makes their child sick for sympathy or attention.