A woman pushed her friend into a reservoir before both of them drowned in a disturbing incident captured on CCTV.
Footage shows two women standing near the edge of the water in the city of Nanjing, China when a woman wearing an orange jumper bends down to tie her shoelace.
As she does so, the other woman appears to shove her into the water from behind before both women fall into the water.
The woman in orange can be seen struggling as the woman in black holds her down.
Police confirmed that the pair drowned in the bizarre incident in the eastern Chinese state of Jiangsu, Yahoo News reports.
Photos appeared online of authorities retrieving the women’s bodies with police divers in operation.
CCTV footage of the shocking event on Wednesday has gone viral in China, with an investigation launched on Thursday.
The video has been shared on the Chinese Twitter-like social media site Weibo, with the clip being viewed more than 500 million times to date.
After the video quickly circulated online, Lishui Bureau of Nanjing Public Security Bureau confirmed on Saturday that a probe had been launched.
Speculation has grown online as to what led to the shocking events.
Police are expected to release the details of their investigation into the two deaths in due course.
Reports claim the woman who pushed her friend to her death had been suffering from depression and had been prescribed medication.
The two women are said to have been former colleagues.