Get breaking news alerts and special reports. The news and stories that matter, delivered weekday mornings.

May 22, 2014, 9:48 AM UTC / Updated May 22, 2014, 11:38 AM UTC

Accused Boston Marathon bomber Dzhokhar Tsarnaev wrote a note declaring “we Muslims are one body” as he emerged from the boat where he had hidden from investigators, according to a report based on court documents.

The accused bomber wrote about his dead brother, Tamerlan, NBC News affiliate in Boston WHDH reported.

"I do not mourn because his soul is very much alive. God has a plan for each person. Mine was to hide in this boat and shed some light on our actions,” Tsarnaev wrote in the note, according to WHDH.

Let our news meet your inbox. The news and stories that matters, delivered weekday mornings. This site is protected by recaptcha

Tamerlan Tsarnaev died on his way to the hospital after the bombings in April 2013. Dzhokar Tsarnaev is charged with using a weapon of mass destruction resulting in the deaths of a boy and three other people.

In his note, Tsarnaev added that "...we Muslims are one body, you hurt one you hurt us all... know you are fighting men who look into the barrel of your gun and see heaven, now how can you compete with that."

The court documents cited by WHDH were filed Wednesday by prosecutors opposing a motion from the Tsarnaev’s lawyers to suppress statements he made at the time of his arrest, claiming he had made them under duress.

During those interviews, court documents allege, Tsarnaev "readily admitted involvement" in the bombings and remained "responsive, coherent, and clearheaded" throughout the questioning.

The documents confirm an exclusive report last year by NBC News that federal prosecutors believe Tsarnaev and Tamerlan closely followed a bombmaking process detailed in the digital al Qaeda magazine “Inspire.”

They also reveal the bombers used powder from crushed fireworks, fuses made from Christmas lights and detonators assembled from model car parts to construct their bombs, prosecutors allege in new court documents.

Alastair Jamieson