Former Mayer Brown partner Joseph Collins was convicted on Nov. 16 of helping top executives at Refco conceal a $2.4 billion fraud from investors and purchasers of the financial services firm.

In the fifth day of deliberations, a jury in Southern District Judge Loretta Preska’s courtroom emerged to find the veteran lawyer guilty of conspiracy, two counts of securities fraud, two counts of false filings with the Securities and Exchange Commission and two counts of wire fraud.