UPDATE: No arrest has been made in Boston Marathon bombing case

Jim Bardin/iReport

Explosions went off at Boston marathon finish line


by Chris Patterson

(CNN) -- There have been no arrests in the Boston Marathon bombing investigation, according to Boston police and the Justice Department. A federal law enforcement source told CNN's John King that there has been "significant progress but no arrest." A Boston law enforcement said "we got him," but didn't clarify whether that means authorities have identified a suspect or arrested one. Some federal sources say that even to say the suspect has been identified goes too far, but several sources in Boston say they have a clear identification.