A Eight-year-old Saros Enris and his sister Leanor, six, were pulled out from their burning home in Holland Road in the Hamstead area of the city
in the early hours of Friday morning.
Their neighbors
tried to give them first aid but when emergency services arrived they said they discovered the youngsters "lifeless on the lawn".
The children were pronounced dead shortly after they arrived in hospital.
The kids father, who is in his 40s, was discovered hours later in a burnt out car 35 miles away in Staffordshire.
He now remains in a critical condition in hospital.
Detective
Inspector Justin Spanner, from West Midlands Police, said: "This is an
absolutely tragic set of circumstances and my thoughts are with everyone
who has been affected.
"We are still at the early stages of
understanding exactly what happened and why - but at this time I can
confirm we are not looking for anyone else in connection with this
investigation.
"I am still keen to hear from anyone who was in the area in the early hours of yesterday morning and who has not yet spoken to us, please do get in touch."
The children's mother was not seriously injured in the
fire and is being treated as a witness.
Their neighbors
tried to give them first aid but when emergency services arrived they said they discovered the youngsters "lifeless on the lawn".
The children were pronounced dead shortly after they arrived in hospital.
The kids father, who is in his 40s, was discovered hours later in a burnt out car 35 miles away in Staffordshire.
He now remains in a critical condition in hospital.


"I am still keen to hear from anyone who was in the area in the early hours of yesterday morning and who has not yet spoken to us, please do get in touch."
The children's mother was not seriously injured in the
fire and is being treated as a witness.