New York (CNN) -- A New York taxi driver pleaded guilty Friday to involvement in a plot to blow up crowded subway trains. After entering his plea Zarein Ahmedzay delivered a message: "I strongly urge the American people to stop supporting the war against Islam," he said, adding, "I am thankful for myself that I did not do anything to harm anyone but fear someone else will do the same thing." Prosecutors said Ahmedzay and another man, Adis Medunjanin, conspired with Najibullah Zazi on the attack in mid-September 2009, which authorities thwarted. Zazi pleaded guilty and has been cooperating with authorities, investigators have said. Medunjanin has pleaded not guilty.Zarein Ahmedzay pleads guilty to conspiracy, faces possible life sentenceAfter plea, he urges people in U.S. "to stop supporting the war against Islam"Prosecutors reveal names of two al Qaeda leaders thought to have ordered the plotThe two, Saleh al-Somali and Rashid Rauf, both were killed in U.S. drone attacks
At one point, _ said, he began to have second thoughts but ultimately committed to the plan.