Reuters: FBI Interviewed One Of The Suspected Boston Marathon Bombers In 2011

[ProSense]

2. Then maybe they could

"Since he was not under arrest, why would they read him his Miranda rights?"

...just chat with him now, and then arrest him in a couple of days.

DOJ Official: No Miranda Rights For Boston Bombing Suspect Yet

A DOJ official explains why Boston Marathon bombing suspect Dzokhar Tsarnaev has not been read his Miranda rights.

"The suspect is en route to the hospital for immediate treatment," the official tells TPM's Sahil Kapur. "But we plan to invoke the public safety exception to Miranda in order to question the suspect extensively about other potential explosive devices or accomplices and to gain critical intelligence."

The public safety exception allows law enforcement officials to question suspects briefly in a legally admissable way prior to providing Miranda rights in cases of terrorism or when the public might face imminent threat.

http://livewire.talkingpointsmemo.com/entry/doj-official-no-miranda-rights-for-boston-bombing

One thing is certain, this interview will turn out a lot different from the previous one.