Searches are being carried out at houses across Manchester by police searching for a 15-year-old girl and her baby.
Catalina Covaci and seven-month-old son Ricardo went missing from their home in Penrith in Cumbria on 19th December.
Officers believe the pair may be with extended friends or family in the Manchester area.
Catalina is originally from Romania and has strong links with Romanian and travelling communities across the UK and Europe.
Members of the public have been thanked for assisting the police with their search for missing Penrith mum, Catalina Covaci.
The 15-year-old has not been seen since 19th December, when she left her home with her six-month-old son Ricardo.
Police launched an appeal to trace a lady seen speaking to Ms Covaci at Manchester Piccadilly station on the afternoon of 19th December.
A CCTV image of the lady was released, and four phone calls have been received offering information, including one from the commuter who was speaking to Ms Covaci.
Anyone with information is asked to ring Cumbria Police by calling 101 or call Crimestoppers to provide information anonymously on 0800 555 111.
The six-month-old son of a missing Penrith teenager has been released, on the four week anniversary of their disappearance.
15-year-old Catalina Covaci was last seen with her baby son Ricardo at her home in Penrith on 19th December.
Police have released several CCTV images of the teen and an appeal was made to a woman seen talking to Ms Covaci at around 1.40pm on 19th December, at Manchester Piccadilly Station.
Cumbria Police say she’s known to have links in the London, Manchester, Oldham and Glasgow areas but also has strong connections to Romanian and travelling communities around the country.
Detective Inspector Furzana Nazir, from Cumbria Police, has been leading the investigation.
"This is an unusual and concerning investigation due to the fact that Catalina and Ricardo are so young and have not been in touch with their guardians or local friends to say they are safe and well for one month now.
"Numerous calls have come in from members of the public who believe they may have seen Catalina in the Manchester area.
All of these have been followed up, however, we have not yet been able to locate Catalina.
"If anyone knows anything about Catalina and Ricardo’s movements since 19 December, or their current whereabouts, please get in touch with us now by calling Cumbria police on 101."
A CCTV image has been released of a commuter seen talking to a missing Penrith teenager.
Police are appealing to the lady who was chatting to 15-year-old Catalina Covaci at around 1.40pm in Manchester Piccadilly station on the day she went missing (19th December).
The teenager left her home in Penrith, with her six-month-old son Ricardo, after telling her guardians she was going into town.
She was seen at Penrith Train station on the morning she went missing, before taking a train to Manchester.
A CCTV image has been released of a commuter speaking to a missing Penrith teenager at Manchester Piccadilly station.
Police are appealing to the woman seen talking to Catalina Covaci at around 1.40pm on 19th December, when she was last seen with her six-month-old son Ricardo.
The lady is described as wearing a black jacket, a black hat and carrying several black bags.
Anyone who has information about the commuter or Catalina and Ricardo is asked to contact Cumbria Police on 101 or contact Crimestoppers anonymously on 0800 555 111.”
Cumbria Police are asking people to contact them if they have any information on a teenage mum and her baby son who have been missing for over a week.
15-year-old Catalina Covaci and her six month old son Ricardo, were last seen leaving their Penrith home on Wednesday 19th December.
Detective Inspector Furzana Nazir siad:
"We just want Catalina or anyone who knows where she is to get in contact and let us know that her and her baby son Ricardo are safe and well. She is not in trouble. Her welfare is our main concern."
Twitter users are being urged to use #helpfindcatalina if they have any information on the missing teenager and baby.