apparently they shot an MIT police officer in the head a few times, hijacked the car, took some dude hostage, actually let him go, throwing bombs out of the hijacked car at police and then that older brother got killed by officers in a gunfight, then the younger brother took the hijacked car and backed over his dead brothers body and escaped. apparently he is a registered student (or someone else is) at the college I went to, UMASS Dartmouth, and it is being evacuated and ran through by fbi and swat team...pretty much like the entire city and perimeter of Boston.