Robert Simels failed to persuade a federal appeals court to overturn his convictions for conspiracy, attempted obstruction of justice and bribery, thus ensuring that the criminal defense attorney will serve a 14-year prison term for conspiring to intimidate and corrupt witnesses against his drug smuggling client.

The U.S. Court of Appeals for the Second Circuit on Friday upheld 10 of 12 felony convictions secured in 2009 by Eastern District prosecutors who proved that Mr. Simels tried to prevent potential witnesses from testifying against his client, Guyanese drug smuggler Shaheed “Roger” Khan.