Leeds teenager Rawan Hussain has now been missing for more than two days as police continue to search for the 16-year-old.
Rawan was last spotted at her family home in Chapel Allerton at around 5am on Sunday, April 26. She has not been seen since.
Officers began conducting door-to-door enquiries in the vicinity of Chapel Allerton Park late on Sunday night, before ramping up their operation on Monday as more than 100 emergency services personnel were involved in a huge search operation.
Mountain rescue teams, fire crews and ambulance staff were all called in to help police in the investigation, as dozens of specially trained officers analysed a small patch of Gledhow Valley Woods.
Follow live updates from the search here
Forensics officers were spotted leaving the scene carrying bags full of evidence on Monday afternoon - and then the police operation suddenly moved on to another area of the city at around 5.30pm.
It is not yet known where police are currently carrying out further enquiries, but the search for Rawan continues and Leeds Live is anticipating an update from the force today.
Chief Inspector Richard Padwell, of Leeds District, said: "It is out of character for Rawan to go missing like this and we are very concerned for her welfare.
"Her family are understandably upset and we are doing everything we can to support them as we continue with our efforts to find her.
"We would like to hear from anyone who has seen her or anyone fitting her description in the area or elsewhere at any point since she was last seen."
Anyone with information is asked to contact officers via 101 quoting log number 905 of April 26 or online here.
