This man might have punched her and knocked her out before carrying her off.
There was a case like this here in 1999 where a witness phoned in suspicious behaviour of a man with a young girl.
On April 22, 1999, 9-year-old Keyra Steinhardt disappeared in broad daylight when she was taking a shortcut through a vacant lot on her way home from school. An eye witness to the abduction, who lived opposite the vacant lot, told police that she saw a man catch up with the little girl and hit her from behind. The child fell to the ground and she couldn't see her in the long grass but she saw the man fall on her.
Then the man ran away and returned shortly after with a car and lifted the little girl from the ground into the trunk and drove away. Terrified of repercussions, it took the witness a critical 20 minutes to pluck up the courage to make an anonymous phone call to the police. But by then, little Keyra was dead and disposed of.
The following day police traced Leonard Fraser through the witnesses description of his early model red Mazda 626 sedan and picked him up. It was two weeks before Fraser broke and confessed to Keyras murder and took police to her naked body. He had abandoned it on a thick bed of grass near the Rockhampton racecourse. Her throat had been cut and as if in a belated veil of chastity, Fraser had draped Keyras green school jumper over her torso.
DNA samples taken from the blood and hair found in the trunk of Frasers car matched that of Keyra Steinhardt.
http://www.couriermail.com.au/news/...r-leonard-fraser/story-fnihsrf2-1226892135716