President Obama has led tributes to comedian Robin Williams who has died at the age of 63.
The Good Will Hunting and Good Morning Vietnam star died at his home in California.
An autopsy is due to take place today, but it is believed the star may have taken his own life.
<blockquote lang="en-gb"><p>"Robin Williams was an airman, a doctor, a genie, a nanny ... and everything in between. But he was one of a kind." —President Obama</p>— Barack Obama (@BarackObama) <a href="https://twitter.com/BarackObama/statuses/499002971573981184">August 12, 2014</a></blockquote>
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Marin County Police said he was pronounced dead at his home shortly after officials responded to an emergency call around noon local time.
President Obama said: ""He made us laugh. He made us cry. He gave his immeasurable talent freely and generously to those who needed it most - from our troops stationed abroad to the marginalised on our own streets."
I could not be more stunned by the loss of Robin Williams, mensch, great talent, acting partner, genuine soul.
— Steve Martin (@SteveMartinToGo) August">https://twitter.com/SteveMartinToGo/statuses/49897... 11, 2014
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His wife Susan Schneider, issued a statement after the tragic news.
'This morning, I lost my husband and my best friend, while the world lost one of its most beloved artists and beautiful human beings.
'I am utterly heartbroken. On behalf of Robin's family, we are asking for privacy during our time of profound grief.
'As he is remembered, it is our hope the focus will not be on Robin's death, but on the countless moments of joy and laughter he gave to millions.'
His family also issued this statement on the tragic passing of the Oscar winner.
'Robin Williams passed away this morning. He has been battling severe depression of late,' Mara Buxbaum, press representative, said in a statement.
'This is a tragic and sudden loss. The family respectfully asks for their privacy as they grieve during this very difficult time.'