The family of Islamic State bride Shamima Begum have written to the Home Secretary asking for his help to bring her newborn son to Britain.

The letter to Sajid Javid said the baby boy was a "true innocent" who should not "lose the privilege of being raised in the safety of this country".

The teenager, who fled London aged 15 to join Islamic State's self-proclaimed caliphate in Syria, said she wanted to return to the UK with her son.

Her sister Renu Begum, writing on behalf of the family, asked how they could help the Home Secretary "in bringing my nephew home to us".

The family said they have had no contact with Ms Begum and had only learned she had given birth to a boy through media reports.