New picture emerged on eighth day of the federal death penalty trial . Man who found Dzhokhar hidden in parked boat in Watertown , Massachusetts testified before jury on Tuesday . David Henneberry testified that he found the bomber inside 'not moving with a lot of blood ' after he noticed the cover on his boat had come loose . Tsarnaev 's former best friend Stephen Silva also told court how he lent him gun used to murder MIT police officer . Silva says Dzhokhar Tsarnaev warned him about his 'strict Muslim ' brother Tamerlan . Dzhokhar , 21 , faces death penalty if he is convicted of detonating bombs , killing three people and injuring 264 before shooting dead a cop .
New picture emerged on eighth day of the federal death penalty trial . Man who found Dzhokhar Tsarnaev hidden in parked boat in Watertown , Massachusetts testified before jury on Tuesday . David Henneberry testified that he found the bomber inside 'not moving with a lot of blood ' after he noticed the cover on his boat had come loose . Tsarnaev 's former best friend Stephen Silva also told court how he lent him gun used to murder MIT police officer . Silva says Dzhokhar warned him about his 'strict Muslim ' brother Tamerlan . Dzhokhar Tsarnaev , 21 , faces death penalty if he is convicted of detonating bombs , killing three people and injuring 264 before shooting dead a cop .