A boyfriend living in China witnessed the murder of his girlfriend in Toronto over the web.

Qian "Necole" Liu, a 23-year-old York University student from Beijing, was found dead just before noon Friday in her apartment. Toronto police are still looking for a man reportedly seen struggling with her earlier that morning.

Police say Liu was chatting with her boyfriend by webcam at about 1 a.m. when an unknown man knocked on the door.

"She opened the door to a male. She could have known the male but he was unknown to the online witness," Toronto Police Det. Frank Skubic told the Daily Mail.

It took police more than 10 hours to arrive at the scene after Liu's boyfriend contacted her friends living in Toronto.

Toronto Police Constable Tony Vella explained to the Daily Mail that they were not notified until Friday morning.

"Someone had gone to (her) address because they were concerned for her well-being and they went into the apartment and they found her there and they were concerned so they contacted police," he told the paper.

Liu was found naked from the waist down, but that there were no obvious signs of sexual assault or trauma that would have led to her death, police say.

"She was unclothed from the waist down and had been dead for a period of time. There was no trauma to the body which could readily identify the manner of her death and no obvious signs of sexual abuse," Skubic told the paper.

Police say the laptop is also missing.

A York University spokeswoman says they are concerned for students who live off-campus.

"We're doing everything possible to make this a safe environment. It can be a challenge when we don't have any authority off campus," spokeswoman Susan Webb told the Daily Mail.

There are currently no suspects in custody.

The Associated Press contributed to this report.