Updated

A Canadian man accused of killing a Chinese student, attacked in her apartment as her boyfriend watched through a webcam, has pleaded not guilty to first-degree murder.

Brian Dickson offered to plead guilty to manslaughter, but the prosecution rejected the lesser charge in the death of Qian Liu.

Justice Anne Molloy explained to jurors in a Toronto courtroom on Friday that the prosecution intends to prove its case that Dickson is guilty of first-degree murder.

Liu was found dead in her apartment April 15, 2011 just a few hours after her boyfriend in China watched via webcam as she tried to fend off an attacker who appeared at her door. The boyfriend told police he saw Liu struggling with a man before her computer was shut off.