The toddler son of a Highland model died at her Inverness home after a neighbour and paramedics battled in vain to save him.
Police have launched an investigation and are treating two-year-old Clyde Campbell’s death as “unexplained”.
The baby’s elder brother, named locally as Calvin, went to a neighbour’s house to get help and said the child had stopped breathing.
Local man Dave Notman and an ambulance crew tried to revive Clyde, but he was pronounced dead at his mother Amanda Hardie’s home at the Raigmore Estate in the Highland capital.
Yesterday, police officers were guarding the door of the first floor flat in Mackintosh Road.
Residents on the estate said they were shocked and saddened by Clyde’s death.
His 28-year-old mother is a model who was named the Face of Inverness in a beauty competition last year.
She has also modelled as part of a publicity campaign for the Highland Strong Man competition.
Mr Notman, 27, was too upset to talk about the tragedy yesterday.
But his brother Stephen, 31, said: “The older boy went to my door and my brother answered.
“The boy said that his brother had stopped breathing.
“My brother went to do CPR but the wee boy was dead. The police came in and the paramedics too.
“Dave has taken it really hard. He’s in shock about what happened. We’re all shocked. It’s awful.”
Police and an ambulance were called to the block of flats shortly after 3pm on Sunday.
Forensic officers in white overalls spent several hours at Miss Hardie’s house examining the premises.
And yesterday detectives were back at the building to interview more neighbours.
A uniformed officer remained outside the door of Miss Hardie’s flat on the second floor all day.
The curtains of the upstairs level at the two-storey home were closed.
Residents in the block where Ms Hardie lives declined to talk about the incident yesterday.
One man, who has friends in the block, said: “I’m really shocked, everyone is taking it badly.”
Another neighbour said: “I was just heartbroken when I heard.
“I saw the police and ambulance outside the building but you don’t think it’s for something like this.”
A police spokesman said: “Police are currently investigating the death of a two-year-old boy in the Mackintosh Road area of Inverness, which was reported on the afternoon of Sunday, February 23.
“Emergency services were called around 3.06pm to the address and attempts were made to resuscitate him, but these were sadly unsuccessful.
“The death is currently being treated as unexplained and a post-mortem will be carried out.
“The next of kin have been informed.”
A local authority spokesman said: “The Highland Council’s education and health and social care services are working with the police in their investigation of an unexplained death of a young child at Raigmore Estate in Inverness.”