Police have named the man who died at a party in Chelmsford on Sunday.
He was Anton Jardin, 39, from Eastwood Road, Rayleigh. His family said:
"Anton was our loving and caring son, brother and uncle. He was a talented artist and graphic designer, full of enthusiasm for life.
"He loved fitness and sport, including running the London Marathon in 2010 in aid of a local children's hospice. He enjoyed travelling, especially a trip to Australia.
"We are devastated at losing him, words cannot express our loss; there is a hole in our lives which cannot be filled. He was be sorely missed by friends and family.”
Ten men remain in police custody as investigations into Mr Jardin's death continue.