The Met Police say at least five Britons are travelling to join IS every week
Counter terrorism police are investigating reports a Birmingham mother has travelled to Syria to support Islamic State (IS) militants.
Tareena Shakil, 25, from Sparkbrook, who went missing on Friday, is believed to have her one-year-old son with her.
"We have since been working to establish the woman's whereabouts and that she is safe and well," a West Midlands Police spokeswoman said.
One line of police inquiry is that she travelled to Syria via Turkey.
The spokeswoman said the Counter Terrorism Unit was assisting police in Birmingham "given the possibility the young woman may have travelled to Syria".
The child has also been reported missing and was "believed to be with her", she added.
Britain's most senior police officer, Metropolitan Police Commissioner Sir Bernard Hogan-Howe, has said at least five Britons are travelling to Iraq and Syria to join IS every week.
An estimated 500 are already fighting with the group.