For the first time in the trial against Boston Marathon bombing suspect Dzhokhar Tsarnaev, we learned there was another undetonated homemade explosive device found at the scene of the shootout on Laurel Street in Watertown, Massachusetts.
Investigators testified Wednesday they found a Tupperware container on the floor of the rear seat of the driver side of this stolen Mercedes SUV.
Massachusetts State Police Trooper Robert McCarthy testified the Tupperware container had a "hobby fuse" stuck through the top of it and two to three pounds of gun powder in it.
Jurors in the marathon bombings trial also got an up close look at these two undetonated pipe bombs found on Laurel Street.
They had been dismantled to show BBs lining the inside with some type of epoxy, and heard testimony that the pipe bombs had also been filled with gun powder and wired with a hobby fuse.
The jury also heard from two state police crime lab workers who tested blood and DNA found on various pieces of evidence in this case.
DNA analyst Jennifer Montgomery testified that two bloodied white gloves found on the floor of the driver seat in the suspects' green Honda Civic had MIT Police Officer Sean Collier's DNA on them.
Under cross examination, Montgomery also testified this black Adidas sweatshirt Dzhokhar Tsarnaev was wearing when he was captured only had Tsarnaev's DNA on it - and no DNA belonging to Collier.