The jury hearing the Boston Marathon bombing trial on Thursday is due to view autopsy photos of a university police officer whom prosecutors charge defendant Dzhokhar Tsarnaev murdered three days after the deadly bombing. Tsarnaev, 21, is accused of fatally shooting Massachusetts Institute of Technology police officer Sean Collier on April 18, 2013, as he and his older brother prepared to flee hours after the FBI released pictures of the pair, calling them suspects in the attack. They are seeking to spare him the death penalty by demonstrating that he was following the lead of his older brother, 26-year-old Tamerlan, who died after a gunbattle with police following Collier's shooting. The brothers carjacked a man and hurled explosives at police during a gunbattle that ended when Dzhokhar Tsarnaev roared off in a car, running over and killing his brother before disappearing into a drydocked boat in the Boston suburb of Watertown. Click here to read full news..