Police are appealing for the public’s help to trace a missing nine-year-old girl who is in urgent need of medical treatment.

On Sunday, 9 April detectives in Westminster were informed by staff at St Mary’s hospital in Paddington that a nine-year-old girl had attended with her parents after becoming unwell, but the family left before the child could receive treatment.

Early indications suggest that the girl may have Type 1 diabetes and has a high blood sugar count. If not treated immediately she will go into a diabetic coma.

Detectives have established that a man and woman believed to be the child’s parents attended the hospital with the girl at 17:42hrs. A second child – a young boy – was also with the adults and was being pushed in a pushchair.

The girl was initially seen by medical staff and her parents informed them that their child’s name was Mashael Aldosari. Detectives are unsure if this is the child’s real name as the family provided a false address to staff. Police know very little about the family as the adults did not provide their names to staff at the hospital. All four left the hospital at 19:44hrs.

At this early stage detectives believe that the family could be from Kuwait.

The family are believed to have told medical staff that they had travelled to the UK in order for their son to receive hospital treatment. Enquiries have established that this is may not be the case.

It is not known when the family entered the country and enquires continue with other agencies.

Given the circumstances, detectives are urgently seeking the trace the young girl in order for her to receive medical treatment.

Mashael Aldosar is described as being less than 5ft tall and has long straight black hair. She was last seen wearing a grey top, leggings and light coloured shoes.

The man is described as being of a heavy build and has short black hair that is receding at the front. He was last seen wearing a light coloured polo shirt with a small logo on and light coloured trousers. The woman is described as wearing a black coloured burka.

Anyone who has seen either Mashael Aldosari or her parents is asked to contact police immediately on 101 or via Twitter @MetCC