West Midlands Police launched an appeal to help find missing 18-year-old A-level student Zoya Anwar who was last seen at the gates of her school more than a week ago.
Detective Superintendent Jo Chilton said there had been "no confirmed sightings" of Ms Anwar since her disappearance on February 26.
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Rosalind Brotherton initially started working at a school canteen but after studying part time is now in charge of a primary school.
The unexploded bomb was found near the Houses of Parliament and led to disruption in central London overnight.
Southern parts of England and Wales will see sunny skies after a frosty start.