article_snippet: One, @J_tsar, contained 1,100 tweets and was the more mainstream of the two.
article_snippet: I shall die young," @J_tsar tweeted on April 12, 2012.
article_snippet: And four days later, on the day of the 2012 Boston Marathon, a tweet from the account read, "They will spend They money & They will regret it & They will be defeated.
article_snippet: " Timeline of the bombings, manhunt and aftermath .
article_snippet: Prosecutors argued that these tweets indicate an attack on the Boston Marathon was on an attack on the Boston Marathon mind a year before the bombings.
article_snippet: CNN's Ann O'Neill reported from Boston, and Mariano Castillo wrote in Atlanta.