Fears are growing for a mother and her new born child who broke down on a motorway on Thursday night.
Greater Manchester Police are appealing for Constance Marten to make contact and seek medical assistance.
Ms Marten, her partner Mark Gordon and their infant child were last seen walking near junction 4 of the M61 in Bolton after their car broke down.
GMP said evidence suggested Ms Marten had 'very recently given birth and neither her or the baby have been assessed by medical professionals'.
Constance Marten and Mark Gordon (pictured), along with their recently born child, are missing after their car broke down near junction four of the M61, near Bolton, on Thursday night
Police appealed to Ms Martin, saying their 'number one priority' is to keep her 'beautiful newborn safe'
Police have released photographs of Ms Marten and Mr Gordon and are appealing for the public's help in locating them.
Officers said after their car broke down, the couple walked towards Anchor Lane bridge which links the Highfield and Link Slot Gacor Little Hutlon areas Bolton.
Greater Manchester Police's head of protection Chief Superintendent Michaela Kerr said her priority was to keep the 'beautiful newborn safe'.
Mr Gordon is described as wearing dark clothing while Ms Marten, who has a southern accent, was wearing a burgundy coat.
The baby was swaddled.
Chief Super Kerr said: 'As a mum, I would like to make a direct appeal to Constance. Constance, I know this is an exceptionally hard time for you and you are likely feeling scared, but I promise that our number one priority is the same as yours - to keep your beautiful newborn safe.
'As you know, it's really important that both you and your baby are assessed by medical professionals as soon as possible, so please make contact with emergency services or make your way to your nearest hospital, wherever that may be.
'I would also like to appeal to members of the public - not just in Bolton but across Greater Manchester and beyond.
'If you have any information about this family's whereabouts, please do nothing more than contact emergency services.
GMP can be contacted via Live Chat on our website or 999. Even the most minor detail might help us keep this mum and baby safe.'
Police appealed for anyone with information to contact Greater Manchester Police on 999 quoting 2657 05/01/23 or via gmp.police.uk.
Information can also be shared anonymously via the independent charity - Crimestoppers on 0800 555 111.