WHERE SHE WAS FOUND
What is known: Joanna was strangled, but the post mortem found no obvious signs of a sexual assault. She was also fully clothed when she was found, although her coat was found in her flat. A DNA sample from another person was found on her body.ANALYSIS: The nature of the sample is unclear. DNA samples in other crime scenes often come from a piece of skin, a drop of blood or a fragment of fingernail. It is also unclear if the particle has provided the police with a full and unique DNA profile or is so-called ‘low copy’ DNA which makes it much harder to pinpoint to a single individual. Heavy snowfall which covered her body in the days before Christmas made it difficult for forensic specialists to determine accurate timings of events.
THE MOTIVE
What is known: Police have been careful to avoid publicly declaring a prime motive, but yesterday said they were considering a sexual motive.
ANALYSIS: Given that 88 per cent of murder victims know their killer, police are focusing a significant part of their investigation into the background of anyone who was acquainted with Joanna. Other credible theories include the possibility that she may have been followed to her flat by a random stalker or killed by a man whose romantic advances were spurned, possibly during her drinking session after work
that evening.THE ARREST
What is known: Yesterday police revealed that the murderer might have had an accomplice.
They have already publicly declared that Jo’s boyfriend Greg Reardon is not a suspect because he was en route to Sheffield on the night she disappeared.
Detectives arrested Chris Jefferies (pictured), a 65- year-old former English teacher, last Thursday on suspicion of murder, but released him on bail two days later. He
remains the only known suspect although he insists he is innocent and is considering legal action.ANALYSIS: It is not known whether detectives really believe there was more than one killer, or whether they are forced to keep their minds open because they have so little evidence to be sure of anything.
They could have either charged Jefferies with murder or released him. They chose a third option, to release him on police bail (so he must not leave the country or go into his flat, and must report to police his whereabouts) – some 48 hours before the time limit for holding him expired.
Read more: http://www.dailymail.co.uk/news/article-1343805/Joanna-Yeates-murder-A-chilling-twist-police-refuse-rule-sexual-motive-TWO-killers.html#ixzz1A1CG1N1q
