Alexander Henderson, seen in this photo in the 1990s, was a B.C. Supreme Court judge in Vancouver from 1995 to 2003. (CBC)

A former B.C. Supreme Court judge working in the justice system in the Cayman Islands was arrested Wednesday on suspicion of misconduct.

Alexander Henderson, who left the bench in Vancouver in 2003, is a judge of the Grand Court in the Cayman Islands, a British territory located about 240 kilometres south of Cuba.

Henderson has not been charged with any crime, Cayman Islands Gov. Stuart Jack said in a statement Wednesday.

The arrest was part of an "unprecedented" corruption investigation by police in London into some members of the Royal Cayman Islands Police Service, Jack said.

"It saddens me to add that this investigation has now led to the arrest today of Justice Alexander Henderson," Jack said.

"This matter has nothing to do with any judgments delivered by Justice Henderson in court."

Henderson was a B.C. Supreme Court judge in Vancouver from 1995 to 2003. He was an acting judge of the Cayman Islands Grand Court, the territory's superior court, before becoming a full judge.

Martin Bridger, a senior investigating officer with Scotland Yard, said the London police investigation stemmed from allegations made against a deputy police commissioner with the Cayman Islands force and the editor-in-chief of a Cayman news website.

Details of the British police probe have not been released.

In B.C., Supreme Court Associate Chief Justice Patrick Dohm told CBC News he was "astounded" by Henderson's arrest.

Dohm said the Henderson he knew is beyond reproach and has no dark side.

Henderson was a heavyweight in the B.C. justice system. He presided over the trial of Shannon Murrin, who was acquitted in 2000 of the 1994 murder of eight-year-old Mindy Tran. He was the special prosecutor in the Nanaimo Commonwealth Holding Society case, and the special prosecutor in the Bennett Doman trial, when former B.C. premier Bill Bennett was charged with insider trading.