Overview

• Thomas Kwan, 53, used a disguise and forged documents to pose as a nurse and administer a toxic injection to Patrick O'Hara, 72.
• O'Hara suffered from necrotizing fasciitis, a life-threatening flesh-eating disease, after receiving the fake vaccine.
• Kwan's motive was reportedly an inheritance dispute, as O'Hara was named in his mother's will to inherit her house.
• The doctor was found guilty of attempted murder after initially denying the charges but changed his plea upon hearing the prosecution's case.
• Police discovered a variety of chemicals and guides on poisons at Kwan's home, although the exact toxin used remains unidentified.