Oculus co-founder Palmer Luckey is leaving Facebook just weeks after the company lost a $2bn lawsuit over the Oculus intellectual property to games company Zenimax, owner of Bethesda.
And his departure comes three years after selling his crowd-funded virtual reality headset development company to the social network for $2bn.
However, the vague statement from Facebook revealing the news did not give specific reasons why Luckey was leaving.
"Palmer will be dearly missed," a Facebook spokesperson said. "His inventive spirit helped kickstart the modern VR revolution and build an industry. We're thankful for everything he did for Oculus and VR, and we wish him all the best."
Luckey's departure comes just months after he was criticised for covertly helping a bunch of Donald Trump-supporting trolls that used the internet to pump posts and memes mocking his rival for the presidency, Hillary Clinton.
"I came into touch with them over Facebook. It went along the lines of 'Hey, I have a bunch of money. I would love to see more of this stuff'. They wanted to build 'buzz' and do fundraising."
But Luckey's departure from Facebook almost certainly has more to do with his role in the company's legal tussle with ZeniMax, which may undermine its whole virtual reality strategy.
In February, a US jury ordered Facebook and the creators of Oculus Rift to pay $500m to the gaming software company, following accusations that Luckey violated a non-disclosure agreement signed when building early versions of the Oculus Rift headset.
Zenimax successfully argued in court that the Oculus headset was built using technology developed by former ZeniMax employee, and now CTO at Oculus, John Carmack.
Luckey was ordered to pay just $50m of the award and another former Oculus executive, Brendan Iribe, $150m.
The lion's share of the award, though, will be shouldered by Facebook, and that comes on top of the $2bn that the company paid Luckey to take Oculus off his hands.
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