NEW YORK  - A Bosnian-born US citizen was sentenced to life in prison on Friday for his role in planning a suicide bomb attack on New York City subways in 2009 at the behest of senior al-Qaeda operatives.

Adis Medunjanin, 28, was convicted in May by a federal jury in Brooklyn on nine counts including conspiracy to use weapons of mass destruction, conspiracy to commit an act of terrorism and providing material support to al-Qaeda.

Prosecutors had urged US District Judge John Gleeson to give Medunjanin the maximum penalty of life in prison, saying in a pre-sentencing court filing that he ‘committed a host of heinous crimes aimed at killing and maiming his fellow American citizens in order to alter and take revenge for American foreign policy.”

Medunjanin’s accused co-conspirator Najibullah Zazi was arrested in September 2009, just days before Medunjanin and a third member of the plot, Zarein Ahmedzay, planned to carry out what US Attorney General Eric Holder called “one of the most serious terrorist threats” to the US since the Sept 11 attacks.

Lawyer for Medunjanin Robert Gottlieb described him as a bright young man.

 with a loving family who had fled to the US from Bosnia when he was a child. Members of his extended family sat quietly in the back of the courtroom, some of them wiping away tears.

When asked if he would like to make a statement, Medunjanin, recited several Quran verses in Arabic. He then delivered a speech about the plight of Muslims and the poor across the world, and denied having anything to do with the subway plot.

Gleeson said it was difficult to believe that three men who went to high school in Queens, New York, could become pawns in an al-Qaeda plot. “This was not a fringe character in our society,” he said.

During Medunjanin’s trial, prosecutors described how the three made a plan to travel overseas with the intent of joining up with Taliban fighters in Afghanistan. They made it to Pakistan, where they were introduced to an al Qaeda facilitator. That facilitator took them to meet with senior al Qaeda operatives, who provided them with military training and persuaded them to return to the United States to carry out an attack in New York City.

After their return, the three met to discuss their plans for a suicide attack, and settled on a target: New York City subways. Zazi began to assemble explosive devices at his family’s home in Colorado, and drove to New York City with the materials in September 2009, prosecutors said. The plan was aborted when Zazi and Ahmedzay became suspicious that they were being monitored.

After federal agents searched Medunjanin’s home in January 2010, Medunjanin got into his car and sped erratically across the Whitestone Expressway in Queens, crashing his car into another vehicle in what prosecutors described as a last-ditch attempt to fulfill his suicide mission.