Urfan Sharif, 41, his partner Beinash Batool, 29, and brother Faisal Malik, 28, left the UK a day before police discovered Sara's body in Woking, Surrey, on August 10.
A post-mortem examination found the youngster had suffered "multiple and extensive injuries" over a "sustained and extended" period of time.
The trio landed at Gatwick airport last night on a flight from Pakistan via Dubai, five weeks after they left Britain.
Pictures showed police boarding the plane and taking them away in hand-cuffs. Sara's mother Olga Sharif has been informed of the development and is being supported by officers, Surrey Police said.
This story is from the September 14, 2023 edition of Evening Standard.
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This story is from the September 14, 2023 edition of Evening Standard.
Start your 7-day Magzter GOLD free trial to access thousands of curated premium stories, and 9,000+ magazines and newspapers.
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