THE devastated dad of two kids stabbed to death by their mum wept to relatives yesterday: Why did she do it?

Navarajah Navaneethan, 39, is keeping a vigil at the bedside of his six-month-old daughter, fighting for life after her neck was slashed.

Son Shanjayan, five, and daughter Shajrani, four, were found slaughtered at the family home in Carshalton, Surrey, on Friday night.

Their shopkeeper mother Sasikala, 35, has been sectioned under the Mental Health Act.

Navarajah is staying with relatives in Forest Hill, South East London.

He is on bail, accused of beating up his wife after discovering what she had done.

A man who answered the door yesterday said: He is too distressed to talk. He is crying and screaming because of the pain. He doesnt know why she did it and hasnt spoken to her since it happened.

It will haunt him forever. He is travelling to the hospital every day.