Hertfordshire Police are concerned about the welfare of a missing female from Tring.
The woman, known only as Adrinna, was last seen at around 11.30pm on Sunday evening (October 24) near Marks and Spencer in the town centre.
The force have asked the public to call 101 if they have any information surrounding Adrinna’s whereabouts or to call 999 if they are with her.
According to the Missing People charity, somebody is reported missing every 90 seconds in the UK, equating to a total of 170,000 people.
Of that number, almost 98,000 are adults and more than 70,000 are children.
The charity also states that 75% of adults are found within the first 24 hours of being reported missing and 85 per cent are found within two days, while five per cent are not found in the first week.
For children, the respective figures are 80%, 90% and two per cent.
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