Stay up to date with notifications from The Independent

Notifications can be managed in browser preferences.

Case cracked – by a leech

Kathy Marks
Wednesday 21 October 2009 00:00 BST
Comments
(REX FEATURES)

Your support helps us to tell the story

From reproductive rights to climate change to Big Tech, The Independent is on the ground when the story is developing. Whether it's investigating the financials of Elon Musk's pro-Trump PAC or producing our latest documentary, 'The A Word', which shines a light on the American women fighting for reproductive rights, we know how important it is to parse out the facts from the messaging.

At such a critical moment in US history, we need reporters on the ground. Your donation allows us to keep sending journalists to speak to both sides of the story.

The Independent is trusted by Americans across the entire political spectrum. And unlike many other quality news outlets, we choose not to lock Americans out of our reporting and analysis with paywalls. We believe quality journalism should be available to everyone, paid for by those who can afford it.

Your support makes all the difference.

When Tasmanian police arrived at the home of an elderly victim of armed robbery in 2001, they found only one piece of forensic evidence: a leech, freshly engorged with blood. They bagged it and extracted the blood for DNA profiling, with little hope it would lead them to the culprit.

Last year, Peter Cannon was arrested on unrelated charges, and a cross-check established that his blood sample matched that taken from the leech. In what is believed to be a world first, the evidence led to him pleading guilty this week to aggravated armed robbery.

It was, Detective Inspector Mick Johnston told the Hobart Mercury, "the oddest way of convicting anyone I have ever been involved in". He added: "I have not been able to find any similar cases anywhere in the world."

The leech was found next to a safe in the home of 71-year-old Fay Olson, who lives in a remote wooded area of Tasmania. She had been threatened with sticks by two hooded men who broke into her house, tied her to a chair and stole 550 Australian dollars (£300).

Police established that neither Ms Olson nor any of the officers who went to the house had been bitten. Cannon, 54, who will be sentenced on Friday, faces up to 21 years in jail. Police are still searching for his accomplice.

Join our commenting forum

Join thought-provoking conversations, follow other Independent readers and see their replies

Comments

Thank you for registering

Please refresh the page or navigate to another page on the site to be automatically logged inPlease refresh your browser to be logged in