A 7-year-old girl was raped and murdered before having her body dumped in the rubbish.
Zainab Ansari was last seen on her way to a religious recital when her body was found 2km from her home.
Chilling CCTV footage captured the moment a male suspect lad her away before she was strangled to death.
Speaking at Islamabad airport as he arrived back in the country, her father Ameen Ansari said, as his wife sobbed: "We will not bury Zainab until the killer is caught.
"If the police would have acted immediately, the culprit would have been caught."