The child is expected to give birth in the near future.
The father of the baby is believed to be only a few years older than the mother, according to police.
Further details of the pregnancy cannot be made public for legal reasons and the local authority is seeking strict reporting restrictions in the family division of the High Court.
Britain’s current youngest mum gave birth in 2014 when she was 12 and the father was 13 - giving them the lowest combined age of any British parents.
The toddler is now looked after by her 28-year-old gran, while her mum attends school.
The UK’s youngest dad is is Sean Stewart,of Bedford, who became a father at the age of 12 in 1998.
In 2009, Alfie Patten from Eastbourne, East Sussex, claimed he had made his 15-year-old girlfriend pregnant when he was just 12.
But DNA tests later established that a 15-year-old boy was the actual father.
