Texas mother who stoned sons to death in court

Psychiatric experts for both the defence and prosecution agree that Texas woman Deanna Laney, 39, was mentally ill last year when she stoned two of her sons to death and severely injured a third.

But although her lawyers will try to prove she is innocent by reason of insanity, prosecutors say she knew right from wrong and is guilty of two counts of capital murder and one count of serious injury to a child.

The prosecution is not seeking the death penalty. A jury was set to begin hearing the case today.

Psychiatric experts concluded that Laney had four psychotic episodes before the killings and probably had delusional psychotic disorder for at least three years.