They left the UK for Pakista n on Wednesday 9 August, the day before Sara Sharif's body was discovered.
Surrey Police also revealed Mr Sharif, 41, made a 999 call from Pakistan.
It was that call which led officers to the house in Woking where they found Sara's body with "multiple and extensive injuries", which were likely to have been caused over a sustained period of time.
The 10-year-old has now been formally identified.
A post-mortem examination carried out on Tuesday concluded the cause of death was "still to be established" and further tests were needed.
The force said a post-mortem revealed that Sara "suffered multiple and extensive injuries", which they said were "likely to have been caused over a sustained and extended period of time".
However, the cause of Sara's death is "still to be established", and further tests were needed, a spokesperson said.
It is now known that Urfan Sharif called 999 from Islamabad on 10 August, expressing a concern for his eldest daughter's safety - although exact details of the conversation are unknown.
Sky News has seen the passports and holding plane tickets for Mr Sharif, Ms Batool and Mr Malik.
Detective Superintendent Mark Chapman, from the Surrey Police and Sussex Police Major Crime Team, said: “Firstly, on behalf of Surrey Police, I would like to express my heartfelt condolences following Sara’s tragic death. Our thoughts are with her mother at this difficult time. We also fully appreciate the impact this devastating incident will have had within the local community.
“While the post-mortem has not provided us with an established cause of death at this time, the fact that we now know that Sara had suffered multiple and extensive injuries over a sustained and extended period has significantly changed the nature of our investigation, and we have widened the timescale of the focus of our enquiry.
“In the meantime, I would like to reassure you that we are doing everything possible, including working with our partners and international agencies, to ensure that those responsible for Sara’s tragic and untimely death are brought to justice.”
Sara’s mother, Olga Sharif, is being supported by specialist officers and police say the two have not been in contact.
In an interview with the Sun, Ms Sharif described her daughter as “an amazing child” and told the newspaper that her life “will never be the same again”.
Read more
Gun Media and Sumo Nottingham released The Texas Chain Saw Massacre Game The world looking for new Strategies to make low carbon heat the norm by 2050Sarah H
Also on site :
- Stranger Things: The online revolt over the final season is evidence of a major modern TV dilemma
- The Princess Bride star Cary Elwes breaks silence on his grief over Rob Reiner’s death: ‘Life is pain without you’
- 20 TV shows everyone will be talking about in 2026, from Pride & Prejudice to Dear England