A post-mortem examination of Hannah's body showed that she had been strangled. Although fully dressed, her clothing had been tampered with and she had scratches on her legs.
That day, Kohli was spotted with a mark under his eye, pleading with a colleague for cash for a flight to India.
Kohli became the prime suspect after his supervisor saw a television appeal and noticed that the route Hannah's killer had used was the same as the one he had taught Kohli when he became a sandwich delivery driver. Kohli's DNA matched semen found at the murder scene.
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