Toni-Ann Byfield and her father Bertram were killed last September

The report into the death of the seven-year-old, who was shot with her father at his London bedsit last year, will be made public on Thursday.

It was ordered by Birmingham City Council. She was in the care of its social services when she was killed.

The city's child protection group said it showed lessons had to be learned.

Drugs debt

An article in Wednesday's Independent newspaper suggests members of Birmingham social services are severely criticised in the report.

The council declined to comment on the report but Birmingham Area Child Protection Committee said in a statement: "The review establishes that there are lessons to be learned by agencies involved in Toni-Ann's care and that action needs to be taken to better safeguard children."

Toni-Ann had been staying with her 41-year-old father, convicted drug dealer Bertram Byfield, at his home in Kensal Green on 14 September last year, when the pair were killed.

It is thought that Toni-Ann was shot in the back as she ran away to prevent her identifying the gunman.

Detectives have looked at the possibility that Byfield was executed over a drugs debt.

Raised in Jamaica, he had previously served a nine-year prison sentence for dealing crack cocaine and had survived an attempt to shoot him the year before.