Police sniffer dogs and up to 40 police officers, some on horseback, are today searching open areas around the home of a missing teenager in teeming rain.
Chief Inspector Daniel Taylor, who is leading the Gwent Police search operation, said both police and 18-year-old Nida Ul-Naseer family are increasingly concerned for her welfare.
He said that forensic teams had examined the area and extensive searches have been carried out in the neighbourhood.
He added: "There is no forensic evidence that she has been taken."
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The little boy cried for help but began making the two-mile journey home on his own when there was no response.