London: Scotland Yard fear a missing British Muslim mother and her four children, including a four-year-old son, may be travelling to Syria, where dreaded militant outfit Islamic State has occupied large swathes of land.
Zahera Tariq, 33, was last seen in Walthamstow, east London, on Tuesday, and is thought to have left the country via London City Airport.
Tariq and her four children were reported missing by a family member the next day, the Metropolitan Police said.
CCTV images of the family prior to their departure to Amsterdam have been released.
Commander Richard Walton, of the Met's counter-terrorism command, said her relatives were "extremely worried".
"We are concerned about Zahera and her four children and we are doing all we can to work with our partners and colleagues both here and abroad to try and locate them and make sure they are all safe and well," Walton added.
However, he said there was "no current information" to suggest Tariq had already reached Syria.
Police has released her profile as Asian, of medium build, approximately 5ft 3ins tall, with long black hair.
She is travelling with her four children: Muhammad, 12, Amaar, 11, Aadid, four and daughter Safiyyah, nine.
In recent past, several families, women and children from the UK have left for Syria, where Islamic State militants have overrun large swathes of land and declared an 'Islamic Caliphate'.
Scotland Yard believes more than 40 women and girls have travelled to Syria from Britain in the last year.