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New developments in the Boston Marathon bombing as there is growing evidence today suggesting the suspects Tamil and Joseph Carson are -- May have killed long before last month's deadly attack.
This case now centers on a brutal triple murder back in 2011.
-- -- friends and two others were killed inside of -- Boston area apartment.
Police say the victims throats were slashed -- marijuana was found sprinkled all over their bodies.
Investigators are now questioning Joseph -- about those murders after placing both -- -- Brothers near the crime scene.
Michael -- -- is an investigative reporter for the Boston Globe he's been all over this piece of the story he joins us now with the latest Michael so.
There is what is the evidence linking these two.
-- our native Brothers to this triple murder.
Well right now there's a lot of speculation about what the forensic evidence might be.
But what I can tell you is that police are stepping up their investigation right now and they're taking another look at this case because.
Formally I think it was generally believe that these three individuals.
Were killed on September 12 it's now pretty clear that they were all murdered on September 11.
Which would have been the tenth anniversary of the attack on the World Trade Center and the Pentagon.
Also it's very well known that.
Timberland has -- I have was best friends with -- -- introduced and that way at a gym where they both worked out practicing -- mixed martial arts.
And it's it's known that that -- and was a regular visitor to the apartment where the triple homicide occurred.
It's also -- look pretty clear that whoever.
Murdered these three individuals have to be very strong.
And and -- familiar to the victims we know Tim -- was quite strong we know it was an accomplished.
Amateur -- mixed martial arts fighter and the -- -- we believe that.
The person who committed the murders have to be very strong and perhaps operating with someone else is because all three of the victims were very capable of taking care of themselves as I said.
One of the individuals was martial arts instructor who was -- on his best friend.
Another one was a physical trainer offering these guys -- young strong guys and yet they were.
Overcome overpowered and murdered without a single shot being fired.
Writer and I suggest they say they say was around 9 PM in the evening so it's not like they were asleep in their beds in the middle of the night and they believe that they were awake when this happened I want -- ask you -- ABC news is reporting that some crime scene forensic evidence provided a match.
To both of us are -- Brothers has that -- confirmed.
And it did we have any reason to believe that -- -- -- -- of the younger had any relationship or friendship with these three guys.
Well it has not been confirmed to my knowledge.
And I don't think that the younger guys and I have brother had a specific.
Relationship with any of the three people who were murdered but that doesn't mean his brother didn't bring -- along.
For that particular purpose and that's my point if in fact yeah.
Exactly an -- and if he is the the murderer.
Would have needed help it's pretty it's pretty clear that he probably needed help it's hard to match.
It wouldn't let me let me just died -- a 32 -- -- got to go but.
Yeah that -- -- of the marijuana over the bodies could this have -- some sort of you know Campbell and been radicalized was against drugs -- Karla said to be a pot head.
May be upset they were corrupting his younger brother -- too far out of a limb here.
Well I don't think you're too far -- on -- -- but it it's just speculative it is clear that there was a message here.
It's a little hard to -- think precisely what the message was but there was no doubt that this was a ritualistic slang and had a message was intended to be left.
While it's incredible as they they -- mounting evidence against these two guys in connection with another triple murder thank you Michael.
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