Breaking: Explosion Reported at Boston Marathon's Finish Line

[Peter Lemkin]

..and the AP says an arrest has been made and the suspect will appear in Federal Court within an hour or two for arraignment.....obviously, this person [guilty or not] could not have mailed the letters with the ricin [or whatever it was in them...if anything].

A suspect was arrested Wednesday in the Boston Marathon bombing case and was expected to appear shortly in federal court, the Associated Press reported.

The news agency said U.S. Marshals had taken the suspect to the courthouse in downtown Boston.

The AP report comes as several news sources said investigators have identified images of a suspect seen delivering one of the explosive devices that killed 3 people and injured more than 170 at the finish line of the marathon.

However, there were conflicting reports regarding the arrest, which CNN also reported. Sources tell USA TODAY and several other outlets that no arrest had yet taken place.

CNN's John King quotes the sources as saying that surveillance video from a nearby Lord &Taylor department store was key in the investigation. Television footage also played a role, CNN reports.

"The camera from Lord & Taylor is the best source of video so far," said Dot Joyce, a spokeswoman for Boston Mayor Thomas M. Menino tells the Boston Globe. "All I know is that they are making progress."

A law enforcement official, who described the investigation as "very active,'' told USA TODAY that authorities have been focusing on a mass of photographic evidence provided by the public and area security cameras. But the source indicated that there mixed views on the value of the analysis so far.

"There is a lot going on," said the official, who is not authorized to comment publicly on the investigation.

....I think OBL done it!....