A heavily pregnant woman who fell to her death from a car park before her three young children were found dead had split up with their father the previous night.
Police were called out on Monday at 8am to the death of the woman, named locally as 21-year-old Fiona Anderson, who had suffered fatal head injuries at a multi-storey car park.
Officers investigating the incident later found the children - named by neighbours as Levina, three, Addy, two, and 11-month-old baby Kyden - at their home in London Road South, Lowestoft, Suffolk.
Next-door neighbour and friend Megan Smith, 19, said Ms Anderson had split up with boyfriend Craig McLelland the night before the tragedy.
She had a tendency towards depression, had asked social services for help and was worried that her children would be taken away from her, Ms Smith said.
"She was crying out for help because she was depressed, she couldn't cope. She had three kids, she was 21 years old, pregnant with her fourth - hormones take over, three kids under the age of three is a lot to take on at the age of 21," Ms Smith added.
"She was a lovely, bubbly person, she kept herself to herself, she did the best by her kids, her kids didn't want for anything."
Ms Smith said her friend had turned 21 last month and was due to give birth to her fourth child, who she was planning to call Evalie, on May 6.
She could not say why Ms Anderson and Mr McLelland, who lived in separate houses, had split the night before.
Mr McLelland sobbed as he visited the scene again on Tuesday morning to leave flowers. Hugging his mother Amanda McLelland as they both cried, he told reporters "get out of my face" as they left.