Wuttisan Wongtalay took his own life afterwards
A man in Thailand filmed himself killing his 11-month-old daughter and posted the video on Facebook before taking his own life.
Two clips showing the child's murder were accessible on the father's Facebook page for around 24 hours before they were taken down.
The body of Wuttisan Wongtalay was found next to his daughter but his death was not broadcast, said Thai police.
Officers said Wongtalay was paranoid about his wife leaving him.
Local television images later showed the child's mother weeping and holding her baby.
Shortly before they were taken down the first video was viewed 112,000 times and the second had been watched 258,000 times.
A Thai police spokesman said the incident was the first known killing to be broadcast on Facebook.
"It could be influenced by behaviour from abroad, most recently in Cleveland", he said.
Internet users in Thailand were outraged by the video, with one user calling it the "most evil clip I've seen in my life".
"How can he watch his own child stop breathing? He should have just died alone," said another.
A Singapore-based Facebook spokesman said: "This is an appalling incident and our hearts go out to the family of the victim. There is absolutely no place for content of this kind on Facebook and it has now been removed."
The social media company announced it was reviewing how violent footage was monitored after a video of a man shooting an elderly man in Cleveland, Ohio was visible on the site for two hours.
Facebook Chief Executive Mark Zuckerberg said the company would do all it could to prevent such content ending up on the site in the future.
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