dramatic news that the FBI indeed have been probing this--and another suspect they were interviewing in Florida turned violent and was shot and killed by agents. He supposedly implicated Tamerlan in the murders, orally, but freaked before writing it down. Now there's a question of why three armed agents had to shoot a kill unarmed suspect.
UPDATE #2 Local officials tell ABC that, yes, they are now probing Tamerlan's possible connection to this case.
UPDATE #1 Two days ago I may have been the first to follow-up the little nuggest in the Globe story on Tamerlan's possible ties to grisly recent triple-murder of his "best friend" (photo left). Buzzfeed has lengthy piece now which offers no hard evidence but reports suspicions of friends, going back to Tamerlan oddly not showing up at wake or funeral, being spotted with dead man day before death, and the fact that there was no forced entry on night of killings.
Earlier: Lengthy Boston Globe piece on the two suspect brothers has many fresh details, including Tamerlan's sudden and rude re-appearance at this old boxing gym this week, but this one is kind of a biggy: "Gym owner Allan said that Tamerlan had once introduced him to an
American, Brendan Mess (photo left), whom Tamerlan described as his best friend. Two years ago, Mess and two other men were brutally killed in a
Waltham apartment where they were found by police with their throats
slit and their bodies covered with marijuana. The murders remain
Here's a story on the case. And an earlier one. The apartment was Mess's but not known if he was chief target. Rather odd "tribute" video below. See if you can find Tamerlan in party crowd. Below that another video in his honor.