Police are continuing to question a 37-year-old father on suspicion of murdering his two children at a flat in Manchester.
Two children who died after being found unconscious in a flat in Manchester were strangled, tests have revealed.
Theo Molemohi, aged two, and his four-year-old sister Yolande Molemohi were found unconscious by their mother at the flat in Whalley Range.
Theo Molemohi, aged two, and his four-year-old sister Yolanda Molemohi were found by their mother at the flat in Whalley Range on Wednesday.
The pair were taken to hospital where they died later.
The pair were taken to hospital where they died later.
Their father was arrested and remains in police custody. Police said he was separated from the children's mother.
Their father was arrested and remains in police custody. Greater Manchester Police said he was separated from the children's mother.
The children spent the weekend with their father and were being visited by their mother on Wednesday morning.
'Horrendous incident'
She had let herself in to get some clothes and found the children in a bedroom with their father next to them, police said.
The father lived at Lansbury House, the three-storey block at Whalley Road.
Det Supt Geoff Wessell, of Greater Manchester Police (GMP), said: "This is a quite horrendous incident for the family and for the officers who attended.
"What I can say is that no other person is being sought in connection with this incident at this time."
Forensic examinations of the flat in Whalley Range are being carried out
The detective said the couple, who moved to the UK from either South Africa or Zimbabwe in 2003, had some previous contact with agencies in the city.
The results of post-mortem examinations to establish the cause of the children's deaths are expected to be released later.
Cas Page, headteacher at Our Lady's RC Primary School, said four-year-old Yolanda was a "lovely, happy, bubbly little girl with such a wonderful smile who was loved by everyone in school".
Neighbours spoke of their shock and described the children as "happy and well cared-for".
Sophie Partington, 34, a resident of Lansbury House, said: "They were just a normal happy family, the kids were always playing out on the grass outside.
"I'm shocked, I just can't believe it. I can't understand what's happened. The kids were lovely, cute little kids. He was finding his feet and she was starting school.
"She was a lovely little girl with a brand new school uniform, she looked really smart, and I thought 'They must be really proud'."
