Boxing Coach: Killed Boston Suspect 'Extrovert, Nice Guy'

John Curran says the older brother, Tamerlan Tsarnaev, considered becoming a professional boxer.
2:17 | 04/19/13

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Transcript for Boxing Coach: Killed Boston Suspect 'Extrovert, Nice Guy'
We have been hearing. Quite a bit this morning about your heart -- sending out but his brother talent. Has been -- focus for us and I want to bring in on the fun with -- John -- of -- because he was the boxing coach. Of the older brother Tim Rolen who was killed in that firefight from mister -- and I can you hear is -- Diane Sawyer yes I can. Tell us about his brother told us that have you been hearing the reports that these words. These were peaceful courteous young men and what about him. I I would agree on all of those have I was two days before the bombing. What I thought of this young man I'd say it was a fine young man. Very good athletes. Very courteous. Quiet and -- just. A nice guy I am shocked beyond believe that is involved it was involved. And how recently did you talk to him and did he talk to you about his family his future we know who is married with a three year old daughter. He's. I have been having any contact with them since 2010. At that time he was telling me that he was going to be getting married men. That he was considering turning pro as a boxer. Turning pro as a boxer. He was that good or better yet she was he was -- New England -- Through three years of world. And again did you have any sense that he has done ballistics training of any kind none whatsoever. Just he was. He spoke church in the -- he spoke Russian he spoke English and he was also. Decent piano player and did you see him with his brother did you talk about his brother. The brother would accompany him to the gym and would not box but would do some of the -- yeah. That his brother would sort of should point out form structures. Doing -- Celtics went over. And was there was an introverted. Campbell on wasn't -- -- Hello again we're just beginning to put together these portraits and we thank you and. So are struck by what was occurring just told -- let's say it would never have thought.

This transcript has been automatically generated and may not be 100% accurate.

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