A cached profile photo that matches his picture, and tweets from other users he's interacted with suggest that this is the twitter account of 19-year-old Dzhokhar A. Tsarnaev, the fugitive suspect #2 in the Boston Marathon bombings: @J_tsar. The account is listed under the name "Jahar," which is what classmates called him because his full name was hard to pronounce.
The day of the bombing, Tsarnaev tweeted:
Last year he tweeted:
But there is not much on the account that suggests the user of the account was be anything but a normal 19-year-old kid.
He tweeted Chechnya, where he was born (his family moved to the U.S. in 2002):
">March 14, 2012He tweeted about music:
and random stuff:
He was also apparently a 9/11 truther:
On twitter, friends he interacted with are expressing shock that he's a suspect.
Especially given his, um, laid-back reputation:
And his friends are now experiencing the inevitable wave of reporters and online gawkers now that the twitter account has been discovered: