A federal judge Friday upheld the nine-year prison sentence given to former Bridgeport Mayor Joseph Ganim, who was convicted of corruption in 2003.

Ganim sought a new sentence after the U.S. Supreme Court ruled that federal sentencing guidelines should have been advisory rather than mandatory. However, U.S. District Court Judge Janet Bond Arterton said Ganim deserved to be sentenced at the top of his guideline range because he led a huge corruption scheme and testified falsely at trial on his own behalf.

Ganim was convicted of 16 corruption charges, including extortion, bribery and racketeering. He is serving his time at the federal prison camp in Fort Dix, N.J.