The MIT attack is what led to the shootout where the oldest one was killed (his home was in Cambridge- home of MIT). They were in a 7-11 store which was robbed (not by them) and identified when they were checking the security tape from the robbery. After being spotted by the MIT security guard who was shot, they carjacked a car and were chased by police until they crashed and a shoot-out ensued. Both were wounded. Police were able to grab the older one and were handcuffing him when the younger one jumped back into the car driving towards the police. In the process, he drove over his own brother, dragging him a ways. The older brother was tried to be resucitated but that failed and he was pronounced dead- the younger one was later found in the boat the next night.
That's a nice story, the question is why do you believe any of it?