The family of a banker found dead near his home in east London after apparently taking his own life have paid tribute to a "loving" husband.
Neil Coulbeck was found dead in parkland in east London
Neil Coulbeck, who worked for the Royal Bank of Scotland until 2003, had been questioned by the FBI as a potential witness in the Enron fraud case.
In a statement, his family said they were "deeply saddened by this sudden and tragic loss".
Three Britons were extradited to the US on Thursday to face fraud charges.
Giles Darby, David Bermingham and Gary Mulgrew, who all deny wrongdoing, are accused of fraud arising from the collapse of energy giant Enron.
Mr Coulbeck's body was found in a park near Newgate Street, Chingford, on Tuesday. His wife had reported him missing last Thursday.
His family said: "Neil was a loving husband and father who led his life in the only way he knew, according to the highest standards of decency, honesty and integrity.
"We are all deeply saddened by this sudden and tragic loss. Sue, Chris and Ralph wish to be left in peace to deal with their loss and ask sincerely that their privacy be respected."
Mr Coulbeck worked for the Royal Bank of Scotland (RBS) - which owns NatWest - until 2004, most recently as head of group treasury, the bank confirmed.
There is no indication his death is linked to the fraud case.
Earlier in a statement, the FBI confirmed it had interviewed Mr Coulbeck on June 13 2002, as part of the Enron corporate fraud investigation but said he was not considered a suspect in its investigation.
It added that Mr Coulbeck was "one of hundreds of individuals" who had been interviewed as part of the investigation.