Boston bombing suspect allegedly wrote anti-US messages inside boat

Boston Marathon bombing suspect Dzhokhar Tsarnaev scrawled anti-American messages inside the boat where he lay wounded, according to US federal prosecutors.

He wrote, among other things, "The US Government is killing our innocent civilians", "I can't stand to see such evil go unpunished" and "We Muslims are one body, you hurt one you hurt us all".

He also downloaded bomb-making instructions from an al-Qaeda magazine and gathered online material on Islamic jihad and martyrdom.

The 30-count indictment released on Thursday contains the bombing charges, punishable by the death penalty, that were brought in April against Tsarnaev, 19, including use of a weapon of mass destruction. It also contains many new charges covering the killing of a police officer and the carjacking of a motorist during the getaway attempt that left his older brother, Tamerlan, dead.

Three people were killed and more than 260 wounded by the two pressure-cooker bombs that went off near the finishing line of the marathon on April 15.

Tsarnaev was captured four days later, hiding in the boat parked in a backyard in Watertown, a suburb of Boston.