Tributes have been paid to the man who oversaw the creation of London 2012's widely-praised parklands.
John Hopkins has died suddenly at the age of 59.
He was the landscape architect in charge of transforming more than 250 acres of the Olympic Park between 2007 and 2011.
Mr Hopkins - who studied at the university of Greenwich - died of natural causes at his home in America.
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A 24-year-old man has been arrested on suspicion of murder after the body washed up on the Thames shoreline.
Seven people have now been arrested after a man died from serious head injuries
The 38-year-old officer was on his way home from a night shift when he collapsed. His death is not being treated as suspicious.