Canine DNA testing has been used by police to convict a man who used his dog as a weapon to bring down a boy he stabbed six times.

Canine DNA testing has been used by police to convict a man who used his dog as a weapon to bring down a boy he stabbed six times.

Canine DNA testing used to convict killerChrisdian Johnson of Wyvil Road, South London, used his dog Tyson and another animal to attack 16-year-old Oluwaseyi Ogunyemi in Larkhall Park, Stockwell.

Police used dog DNA profiling to link the murder to the animals used in the attack in April 2009, and Johnson, 22, was found guilty of murder and sentenced to serve a minimum of 24 years at the Old Bailey on March 19.

Prosecutor Brian Altman QC told jurors the case was unique because the pets were used as weapons.

Johnson was also found guilty of the attempted murder of a 17 year old boy who managed to survive being stabbed nine times.

Johnson was sentenced to 20 years in prison, to run concurrently, for attempted murder. Judge Christopher Moss told him: “You used two fearsome weapons. The first was your pit-bull cross dog, which I have no doubt you had trained to attack and bring down your prey. The second was the knife with which you stabbed Seyi Ogunyemi to death.”

Tyson was stabbed during the attack and taken to a Blue Cross animal hospital for treatment.
Subsequent enquiries revealed he was owned by Johnson and had been chipped and tagged with a serial number.

A blood trail was found leading from the murder scene to Sheldon Court which forensic analysis showed to be from a dog. The blood was matched to Tyson by Gen Probe Dog DNA Specialists.

This groundbreaking forensic work matched the blood from the trail to Tyson’s DNA to a match of one in one billion.

Both dogs were seized and taken into police custody by the MPS specialist dogs unit.

Speaking after the verdict DI Mick Norman (Homicide and Serious Crime Command) said: “The advances in Dog DNA and forensic work now means that anyone who owns a dog and uses it to attack people can be identified and prosecuted.”

View your activity >

Leave a Reply

Be the First to Comment!

Notify of
avatar

wpDiscuz