Call it the battle of CNN/AP and NBC News, told in tweets:


An arrest has been made in the Boston bombings investigation based on two videos showing images of the suspect, a federal law enforcement source told CNN’s Fran Townsend.



UPDATE 2:41: Looks as if NBC News has a pretty good ally in this one:

Erik Wemple writes the Erik Wemple blog, where he reports and opines on media organizations of all sorts.