Ben Burke

And even though they have drawn these connections, they still don't have a clear sense for his motive.

They do know Valente killed himself in a storage locker before investigators even got there, most likely.

Valente wore a winter coat and a medical mask, which made it hard to see his face on surveillance cameras.

The U.S.

attorney for Massachusetts, Leah Foley, said he drove a rental car and swapped the license plate while he was on the run.

As sophisticated as this operation might seem because of these details, authorities right now are saying that they think Valente acted alone.

It's a wild story.

It seems that the break in the case happened on Reddit.

There's a witness who saw Valente in a bathroom at Brown a few hours before the shooting.

He found Valente suspicious, so he followed him out of the building, chased him to his car, and confronted him.

But then the witness walked away, and the shooting happened an hour or two later.

For days, investigators didn't have a lead on how to find the shooter until this same witness posted on Reddit describing the suspect's vehicle.

And that Reddit post is how investigators connected the suspect to a vehicle, which they were then able to track with a license plate reader to find him.

A big question is what's the political response to this going to look like?

Immediately after the news broke last night, Trump suspended the green card lottery program that allowed this alleged shooter to come to the United States in 2017.

Another big question is how are people going to react to how Brown University responded to this tragedy?

Trump's been blaming the university for not having enough cameras on campus, but the university defends its security protocols.

Anytime.

Investigators are imploring the public to review blurry footage of a heavyset man wearing a dark medical mask walking casually through the east side of Providence.

That's their suspected shooter.