Hospital officials where Charlotte Bevan and baby Zaani Tiana went missing from have said they could not have stopped them from leaving.
A spokeswoman said access to maternity wards at St Michael's Hospital is restricted but patients are able to release the doors from the inside to let themselves out.
Women who are identified through screening as potentially being at risk have consultant-led care, involvement of appropriate mental health teams as necessary and involvement of their GP.
Women who are so severely mentally ill that it is thought that they are a danger to themselves or others would be cared for in a mental health facility until they need midwifery or obstetric care, when they would come to the obstetric unit for as long as they need obstetric input.
Patients are free to come and go from the hospital as long as there are no legal restrictions on their movements.
Family members have issued a tribute for Charlotte Bevan and her baby after they were found dead in Bristol.
My beautiful daughter and granddaughter are now at peace. The family would like to thank all the friends of Pascal, Charlotte and Zaani, some of whom we have only met today.
We would also like to say thank you for all the messages from everyone.
We wish to thank all the hospital staff at St Michael’s and the mental healthcare team, past and present.
The response and support from the public has been overwhelming and we would like to thank you all.
We would also like to give our thanks to Avon and Somerset police and the volunteers from Avon Search and Rescue.
We thank the press for their help and ask that we now be left in peace to grieve.
Detective Chief Inspector Simon Crisp described the case as "dreadful, awful, frustrating" during a press conference overlooking the Avon Gorge where the bodies were found.
I regret to inform you that a short time ago on the cliff face close to Charlotte, the body of a small baby girl has been found.
No formal identification has so far taken place but we anticipate that it is going to be Charlotte's daughter.
This is a dreadful, awful, frustrating business and our thoughts are with the family at this time.
We will be conducting an investigation on behalf of the coroner. At the moment we are not treating either death as suspicious.
Avon and Somerset Police have confirmed that the body of a baby girl has been found at the search site at the Avon Gorge.
Officers said that although formal identification has not yet taken place, they are confident the body found is that of five-day-old Zaani Tiana Bevan Malbrouck.
Earlier police confirmed that the body of a woman found in Avon Gorge in Bristol was that of missing mother Charlotte Bevan.
The hospital where tragic mother Charlotte Bevan gave birth to her daughter before going missing has announced a review into her care, following the discovery of her body.
We are deeply saddened to hear the news of the death of Charlotte Bevan and offer our heartfelt condolences to her family.
While it remains unclear as to how Charlotte died, we will be conducting a thorough review of the care Charlotte and her baby received to see if there was anything we could have done to prevent this tragic and unexplained death.
We continue to work closely with other agencies who are continuing to search for Charlotte's baby daughter.
The body of a woman found in the Avon Gorge in Bristol has been formally identified as missing mother Charlotte Bevan, ITV News understands.
The body of a woman found last night in Avon Gorge has been formally identified as Charlotte Bevan.
Hopes that a newborn baby girl who went missing with her mother will be found alive are fading as the search approaches its third day.Read the full story ›
Climbers have joined in the search for a new-born baby who went missing on Tuesday.
Avon and Somerset Police have told ITV News West Country they are concentrating their search in the Avon Gorge area, where a woman's body was found late last night. Formal identification is expected today.
The Portway, a main route into Bristol city centre, and nearby Bridge Valley Road has been closed by police.
South Wales police are to aid the operation along with specialist police dogs.
Specialist search dogs from South Wales Police have been drafted in as detectives continue the search for missing mother Charlotte Bevan and her newborn baby daughter.
Teams are concentrating efforts around the Avon Gorge, where the body of a woman was found late last night. Formal identification has not yet taken place.
Traffic restrictions are in place around the Avon Gorge in Bristol as police continue searching the area after a mother went missing with her newborn daughter.
Charlotte Bevan, aged 30, and baby Zaani Tiana have not been seen since Tuesday evening.
The body of a woman was found near the Gorge last last night. Searches are continuing for four-day-old Zaani.
Searches are continuing in the Avon Gorge this morning. Motorists are being advised of some distruption throughout the day along the Portway
The Portway will be limited to one lane of traffic in each direction whilst searches continue in the Avon Gorge. Avoid the area if possible