Mum, 40, ‘stabs and drowns son, 5, in bathtub and then knifes herself’

A United States mum is being held on suspicion of drowning her young son then knifing herself.

Police say the boy’s father returned home late Monday night to find the five-year-old face down and unresponsive in a bathtub filled with water, reports NBC Philadelphia.

Officers told the broadcaster the boy had a cut to his neck.

Paramedics performed CPR on the boy, who remained unconscious at the scene.

He was rushed to hospital but died a short time later, local law enforcement told reporters.

The mother is in custody following the incident at the family’s West Philadelphia apartment.

The 40-year-old woman was said to have made ‘statements’ to officers, but police would disclose what she said, according to NBC.

She was being treated in hospital on Tuesday morning for what police say they believe is a self-inflicted cut to her wrist, reports added.

The mother’s mental health is also being evaluated.

She will either be questioned by homicide detectives or taken to a mental health facility, NBC reported.