China netizens see conspiracy in US murder-suicide

The fatal shooting of a Chinese-born coronavirus researcher on US soil has fuelled conspiracy theories around the world.

Bing Liu, a 37-year-old assistant professor at the University of Pittsburgh School of Medicine, was found dead in his house on Saturday.

Colleagues said he was close to making "significant findings" on his studies of Covid-19, sparking online speculation it was an assassination.

But police say it was a murder-suicide.