An investor looks through stock information at a trading hall in a securities firm in Shanghai, east China, July 2, 2015. Chinese stocks continued to plunge on Thursday, with the benchmark Shanghai Composite Index dived 3.48 percent to finish at 3912.77 points. The Shenzhen Component Index dropped 5.32 percent to close at 12924.19 points. [Photo: Xinhua]

Beijing police have detained a man for spreading online rumors connected to the recent downturn in the Chinese stock market.

The 29-year old has been arrested for posting a video claiming to show a man committing suicide, along with screen shots.

Captions and an article attached to the online post suggested the victim had taken his own life because of the massive sell-offs in the market.

The post went viral almost immediately.

However, police in Beijing say they've since determined the video is not connected to the market downturn.