The man accused of driving a truck into onto a crowded pedestrian and bicycle path in New York City, killing eight and injuring a dozen others, has pleaded not guilty to murder and terrorism-related charges.Sayfullo Saipov, 29, who arrived in the U.S. from Uzbekistan in 2010, entered the plea in U.S. District Court in Manhattan in connection with the Oct. 31 vehicle attack.Saipov, who was arrested immediately after the attack, is accused of murder and attempted murder and of providing "material support" to a terrorist organization – namely the Islamic State, which has claimed responsibility.After the attack, investigators say Saipov told them he was inspired by watching Islamic State propaganda videos and that "he felt good about what he had done," NPR's Joel Rose reports.His court-appointed lawyer declined to comment after the hearing.Days later, President Trump tweeted that Saipov "SHOULD GET DEATH PENALTY!" and perhaps be sent to U.S. military's detention center at Guantanamo Bay, Cuba. As The Washington Post has noted, the president's "off-the-cuff remarks seemed to risk complicating matters for federal prosecutors."After Saipov's plea on Tuesday, his court-appointed attorney, David Patton, declined to comment on the case, according to Reuters.In the attack, Saipov is alleged to have driven a rented Home Depot pickup onto the bike path along the West Side Highway, mowing down people until the vehicle collided with a school bus. After the crash, he allegedly jumped out of the truck yelling "God is great" in Arabic.A note referring to ISIS was found inside the truck, New York Gov. Andrew Cuomo said at the time of the attack. But it was only days later that the extremist group claimed responsibility, saying "The attacker is one of the caliphate soldiers."Even so, authorities reportedly believe Saipov was a "lone wolf."The Islamic State has also claimed responsibility for a number of similar vehicle attacks in Europe.As NPR's Greg Myre reported earlier this month: