Leah Foley, U.S. Attorney for the District of Massachusetts

So investigators identified the vehicle that he had rented in Boston and then drove to Rhode Island.

and the vehicle was seen outside of Brown, and there was security footage that showed a person who resembled him.

There was financial investigations that were going on in the background that linked him not only to that car, but also to the hotels that he had rented and the car that he had used to not only drive to Rhode Island, but then back to Boston.

And then there was security footage that captured him within a half mile of

the professor's residence in Brookline.

And there is a video footage of him entering an apartment building in the location of the professor's apartment.

And then later that evening, he is seen about an hour later entering the storage unit wearing the same clothes that he had been seen wearing right after the murder.