<p>In his first court appearance, Boston Marathon bomb suspect Dzhokhar Tsarnaev has pleaded not guilty to charges of killing four people and wounding more than 200, as blast victims looked on.<br /><br /></p>.<p>Tsarnaev, 19, faces 30 counts of using a weapon of mass destruction in the two 15 April blasts that killed three, including an eight-year-old boy. Prosecutors could press for the death penalty for 17 counts, CNN reported.<br /><br />The suspect has also been charged over the death of a Massachusetts Institute of Technology (MIT) police officer, who was allegedly shot dead by Tsarnaev and his brother Tamerlan three days after the attack.<br /><br />He is also charged in a carjacking incident and with downloading internet material from Islamist radicals some time before the blasts.<br /><br />Tsarnaev was dressed in an orange jail jumpsuit, his hair long and shaggy, his left arm in a cast, the news channel said. He was wounded in the pursuit-during which his brother, Tamerlan, was killed-and he appeared to have an injury to the left side of his face.<br /><br />MIT police lined up outside the courthouse as the hearing neared its end Wednesday afternoon in a show of solidarity with their fallen comrade, Sean Collier.<br />Inside, about 30 survivors of the attack watched as Tsarnaev appeared before US Magistrate Judge Marianne Bowler.<br /><br />Tsarnaev looked back at the spectators in the packed courtroom before entering his plea-and to Liz Norden, whose two sons each had a leg amputated after the attacks, he appeared to smirk.<br /><br />Prosecutors said Wednesday they expect to call between 80 and 100 witnesses in a three- to four-month trial.<br /><br />The indictment details the planning that allegedly went into the attacks. Tamerlan Tsarnaev bought 48 mortars, it says. It also says that Dzhokhar Tsarnaev downloaded a copy of Inspire magazine, which included instructions on building IEDs using pressure cookers and explosive powder from fireworks.<br /><br />Pressure cooker bombs were used in the Boston Marathon attacks.<br /></p>
<p>In his first court appearance, Boston Marathon bomb suspect Dzhokhar Tsarnaev has pleaded not guilty to charges of killing four people and wounding more than 200, as blast victims looked on.<br /><br /></p>.<p>Tsarnaev, 19, faces 30 counts of using a weapon of mass destruction in the two 15 April blasts that killed three, including an eight-year-old boy. Prosecutors could press for the death penalty for 17 counts, CNN reported.<br /><br />The suspect has also been charged over the death of a Massachusetts Institute of Technology (MIT) police officer, who was allegedly shot dead by Tsarnaev and his brother Tamerlan three days after the attack.<br /><br />He is also charged in a carjacking incident and with downloading internet material from Islamist radicals some time before the blasts.<br /><br />Tsarnaev was dressed in an orange jail jumpsuit, his hair long and shaggy, his left arm in a cast, the news channel said. He was wounded in the pursuit-during which his brother, Tamerlan, was killed-and he appeared to have an injury to the left side of his face.<br /><br />MIT police lined up outside the courthouse as the hearing neared its end Wednesday afternoon in a show of solidarity with their fallen comrade, Sean Collier.<br />Inside, about 30 survivors of the attack watched as Tsarnaev appeared before US Magistrate Judge Marianne Bowler.<br /><br />Tsarnaev looked back at the spectators in the packed courtroom before entering his plea-and to Liz Norden, whose two sons each had a leg amputated after the attacks, he appeared to smirk.<br /><br />Prosecutors said Wednesday they expect to call between 80 and 100 witnesses in a three- to four-month trial.<br /><br />The indictment details the planning that allegedly went into the attacks. Tamerlan Tsarnaev bought 48 mortars, it says. It also says that Dzhokhar Tsarnaev downloaded a copy of Inspire magazine, which included instructions on building IEDs using pressure cookers and explosive powder from fireworks.<br /><br />Pressure cooker bombs were used in the Boston Marathon attacks.<br /></p>