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It is an article talking about a kid who went missing a month ago who is thought to be one of the suspects.

actually posited on reddit, http://www.reddit.com/r/boston/comments/1cn9ga/is_missing_st... a day ago - well before his name was released over the police scanners.

He beat the announcement by single digit hours (5-6), not a whole day. Still, an impressive guess.

Your link points to Reddit, which points to a Twitter user, but when that Twitter user is asked how he knows, he says it was on Reddit.

I'm now completely convinced that story is total fucking bullshit.

There are current reports that the suspects are Chechyan, not the missing guy. Way too early to know who they are, even for the police.