Boston Marathon bombing suspect Dzhokhar Tsarnaev on Wednesday pleaded not guilty to terrorism charges, including using a weapon of mass destruction to kill.
It was his first court appearance since the April 15 attack that killed three people and wounded more than 260. Tsarnaev, 19, had his arm in a cast and appeared to have a jaw injury, according to the Associated Press. He was wounded in a police shootout after officers found him hiding in a boat in a suburban backyard April 19.
His older brother and alleged co-conspirator, Tamerlan Tsarnaev, died following a shootout with police three days after the bombing.
Dzhokhar Tsarnaev, a Muslim, wrote about his motivation for the attack on the inside of the boat where he was caught, the AP cited prosecutors as saying. He wrote the US government was "killing our innocent civilians."
"I don't like killing innocent people," he wrote, but added: "I can't stand to see such evil go unpunished. ... We Muslims are one body, you hurt one you hurt us all."
Two bombs made from pressure cookers went off near the marathon's finish line. Killed were Martin Richard, 8; Krystle Marie Campbell, 29; and Lingzi Lu, 23. MIT police officer Sean Collier was killed later by the Tsarnaevs as they tried to escape, authorities said.