CCTV images have been released which show heavily pregnant Fiona Anderson clutching a teddy bear moments before she jumped to her death after stabbing her boyfriend and killing three of their children.
Miss Anderson, 23, is believed to have stabbed Craig McLelland, 24, in a row at her flat in Lowestoft, Suffolk, on Sunday evening after he allegedly dumped her for another woman.
Suffolk Police have confirmed that officers visited the flat as part of their investigation into the alleged stabbing and spoke to Miss Anderson on an intercom system, but they were refused entry.
In a statement issued by Suffolk police, Ms Anderson’s mother Kerry, father Michael and sisters, Claire and Laura, said she 'cared passionately' but had suffered with mental illness from a young age.
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Fiona Anderson clutching a teddy bear moments before she fell to her death in Lowestoft
Anderson died from injuries sustained from jumping 40ft from a multi-storey car park
Police have released these CCTV images to help piece together Fiona Anderson's final moments
The family said: 'Fiona was a beautiful, intelligent girl and a loving and caring person, but she had suffered from mental illness since she was young and we believe she was driven to her actions yesterday.
'This was not our Fiona - she was not herself. She cared passionately about others but often brought stress on herself by caring too much. She was gentle but ended up under too much pressure.
'As a family we were close but she would often push us away, keen to do her own thing and not to listen when we offered support. Life was sometimes overwhelming for her.
'She was really popular but just didn’t believe she was and had forgotten there were people there that could help her.
'We wish more had been done to recognise her mental health problems, which could be masked by her intelligence and creativity. She would often make costumes for the children, who she loved very much.'
Deaths: Suffolk Police have confirmed that officers briefly spoke to Fiona Anderson, pictured, hours before the tragedy
Fiona Anderson, aged in her early 20s, is believed to have been heavily pregnant when she died. Her three children were found dead at her home three hours after she fell from the car park
The family added that Ms Anderson would be remembered as a 'girlie girl' who was also a very private person.
They said: 'Fiona will be known to many in Lowestoft as she attended Oulton Broad Primary, Lothingland Middle and Benjamin Britten High Schools and will be remembered by us as a girlie girl who loved Disney films and playing with her Barbies and My Little Ponies when she was younger.
'While she was popular she was also a very private person and we’d ask that the media respect this.'
Early on Monday morning, she left the keys to her flat with a member of staff at the Fyffe hostel for the homeless where Mr McLelland lived.
But the heavily pregnant mother then fell 40ft to her death a few minutes later from a multi storey car park in Gordon Road.
Police found the bodies of her children Levina, three, Addy, two, and 11-month-old Kyden just over three hours later at her ground floor flat.
Mr McLelland is not believed to have been seriously injured when he was stabbed, but it is thought that he was treated at the James Paget Hospital in Gorleston, Norfolk.
Suffolk Police have now referred the incident to the Independent Police Complaints Commission as a result of their involvement with Miss Anderson shortly before her death.
A tearful Craig McLelland arrives at the home where his three children were found dead on Monday with his mother Mandy who comforted him as he lay a balloon and a toy
There has been a huge outpouring of grief in Lowestoft since the tragic events of Monday, and dozens have laid tributes
Police let the distraught father through their strict cordon as the continue to investigate the suspicious deaths
Father Craig McLellan pictured with his children (left to right) Addy Kyden and Levina. The three were found dead in their mother's flat
Police released CCTV stills yesterday in an attempt to piece together the 23-year-old's last moments.
Miss Anderson, 23, fell 40ft to her death from a multi-storey car park, where she died at 8am on Monday along with an unborn baby in Lowestoft, Suffolk.
Police found the bodies of her children Levina, three, Addy, two, and 11-month-old Kyden around three hours later at her ground floor flat half a mile away in London Road South.
A post mortem examination carried out on Monday night found the woman died as a result of severe head injuries consistent with a fall from height, Suffolk Police said.
A further post mortem exam failed to ascertain how the three-year-old girl died, with further tests expected.
Examinations of the two other children’s bodies are currently being carried out at Norfolk and Norwich Hospital.
Yesterday, Mr McLelland wept as he left tributes to his three young children, who appear to have been killed by their heavily pregnant mother, who then jumped to her own death.
Craig McLelland, 24, clung to his mother Mandy McLelland for support as he left a Winnie the Pooh balloon and a teddy bear outside the flat where the children died in Lowestoft, Suffolk.
He is thought to have split up with Fiona Anderson, 23, shortly before she fell 40ft to her death from a multi-storey car park, where she died at 8am on Monday along with his unborn baby.
Police found the bodies of their children Levina, three, Addy, two, and 11-month-old Kyden around three hours later at her ground floor flat half a mile away in London Road South.
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Kyden McLelland (left), who was 11-months-old and Levina McLelland, three. It is not known how they died
Innocent: Addy McLelland was just two. He was found dead at the flat with his brother and sister
Unemployed Craig and his mother were allowed through a cordon of police tape for three minutes to look at floral tributes and around 40 cuddly toys and teddy bears left by well-wishers.
He refused to speak to reporters as he left, saying: 'Get out of my face'. He and Mandy, 44, hugged each other in a nearby car park before being driven away.
Mandy who also left flowers at the scene also declined to comment earlier at her home in Lowestoft. She would only say: 'I have lost everything - my whole family'.
Hours before her death on Monday, his ex Fiona Anderson had posted desperate Facebook messages saying her partner had left her for another woman, along with pictures of their unborn daughter.
The 23-year-old put up photographs of her three other children with the message: ‘Mummy will always love you and I’ll never leave you,' adding later: 'I'll keep them safe'.
But she was found dead at the foot of a car park after apparently throwing herself off.
In her Facebook postings, Miss Anderson issued an emotional plea to Craig McLelland.
‘All we did was love you,’ she wrote. ‘We never gave up on you. You have hurt us so much for so long. I gave you everything I could. Your kids worshipped you like a god.'
Police outside the flat on London Road South where the three children were found
Horror after pregnant mother kills herself and three children
Miss Anderson then posted pictures of each of her children and wrote messages about how much she loved them.
‘The most beautiful things I have ever seen. Love you babies so much,’ she wrote.
In a final message she posted a scan picture of a baby and wrote that she was due to give birth on June 10 to a girl she would call Evalie.
On Monday night, Mr McLelland arrived at Miss Anderson’s home close to the seafront in Lowestoft, Suffolk.
Choking back tears, he said: ‘I have just lost my family. My children are dead. What would you be feeling?
‘I found out this morning when I got a phone call saying somebody had committed suicide and I had a feeling who it was.’
When asked whether he had left Miss Anderson for another woman, Mr McLelland, who lives in Lowestoft, broke down and declined to comment.
From left to right: Levina, Kyden and Addy in Halloween fancy dress
Levina (left) in school uniform and a smiling Addy (right) enjoying a joke
Craig McClelland, the father of the three dead children, at the scene. The mother is believed to have committed suicide by jumping from a multi-storey car park 
Mr McClelland is comforted by a friend as he surveys the growing mountain of tributes
Death: Fiona Anderson also known as Fiona Chisholm, is said to have broken up with her partner before jumping from a car park
Distraught: The pair had three children together and are believed to have recently split up
Miss Anderson is thought to have fallen 40ft to her death in Gordon Road. Her children were found three hours later.
Police are awaiting the results of post-mortem examinations to be carried out by a Home Office pathologist at the James Paget Hospital in Gorleston near Great Yarmouth, Norfolk.
Detective Superintendent John Brocklebank, of the Norfolk and Suffolk major investigation team, described the deaths as ‘an awful tragedy’.
He said: ‘We are in the early stages of a large investigation to try and work out exactly what has happened. It is too early to be able to come up with a definitive explanation and we will be keeping an open mind.
‘We are treating the deaths of the children as suspicious, but from our initial enquiries we do not believe there is any threat to the wider community.
‘Our priorities now are to establish the circumstances behind the woman’s death and how it may be related to the deaths of the three children.’
Mr Brocklebank said police were alerted by a 999 call from a member of the public who found a woman lying on the ground beside the car park with serious injuries.
Investigation: An officer guards the doorway to the flat as forensics scour the rooms inside and messages continue to be left outside
Police sealed off this multi-storey car park in Lowestoft following Ms Anderson's death
He added: ‘Emergency services including ambulances and an air ambulance arrived and they did what they could to try and resuscitate her, but unfortunately she was pronounced dead at the scene.
‘We managed to identify the lady concerned which led us to the address. Police officers gained access at 11.20am and the bodies of the children were tragically found inside.
‘I don’t want to speculate about how they died and where the bodies were in the property. We believe she was the mother of the young children.’
Miss Anderson’s ground floor flat was cordoned off by police while officers searched for clues.
Neighbours and friends were putting cuddly toys and flowers on a makeshift shrine outside the flat in a mark of respect.
Karleigh Burlingham, 20, who lives nearby, said: ‘She was a lovely person.
‘She just didn’t seem the sort of mother to do this. It is devastating that three innocent little children have died.
‘I knew her for three or four years and I thought she was a brilliant mother.
‘Her kids were healthy and well brought up. Fiona was outgoing and friendly. She would talk to anyone and she was very laid back.