The mother of two children who died from knife wounds at their home has been detained under the Mental Health Act.

Sasikala Navaneethan, the 35-year-old mother of three was arrested over the deaths of her five-year-old son Shanjayan and daughter Sharani, four.

Her six-month old baby daughter who was also injured is critically ill following emergency surgery.

Mrs Navaneethan was taken to hospital on Friday after police were called to her home in Carshalton, south-east London.

She was taken to a secure mental health unit.

The children's father, 39-year-old Navarajah Navaneethan, was also arrested but has been released without charge to return on bail at a later date.