[Amendment10]

You are overlooking the fact that they knew who they were looking for and the fact that under the 4th amendment all of this was illegal.

I respectfully disagree that authorities were confident that they who they were looking for. This is evidenced by the MIT cop whom the bomber had killed earlier.

[Adder]

IIRC, by the time they tried to rob the curb store, they had pics and names. And certainly they had a good idea after the shoot-out in the street.