Boston Marathon bombing suspect Dzhokhar Tsarnaev pleaded not guilty Wednesday as 30 survivors and victims' relatives stared him down in a Boston courtroom.
Tsarnaev, 19, was arraigned on a 30-count indictment that charges him with using weapons of mass destruction and killing four people. He wore an orange jail jumpsuit and his left hand was bandaged.
"Not guilty," he said over and over as each charge was read.
The eight-minute hearing marked Tsarnaev's first public appearance since he was hauled bleeding from a boat four days after the twin blasts near the finish line of the April 15 race. He returns to court Sept. 23.
Security was tight with Department of Homeland Security officers visible and a police boat behind the courthouse, where spectators began lining up early in the morning.
Seventeen campus police officers from the Massachusetts Institute of Technology lined up in uniform outside the building, in apparent tribute to slain colleague Sean Collier.
Everyone injured in the bombing was invited to attend, and 30 were there, the magistrate said.
Before the arraignment, the mother of two brothers maimed in the blast said she would be looking for answers.
"I want to know what happened that day," said Liz Norden, whose sons, J.P. and Paul, each lost a leg in the April 15 explosions near the finish line of the iconic race.
"How can somebody do something to innocent people like that?"
As Tsarnaev was led from the courtroom, the victims kept their eyes trained on him.