From a cop friend in Boston–
A former partner says there was a reporter at the hospital in Boston. She overheard police saying they have video of the suspect dropping bombs into the garbage cans.
Cops will never admit that have a suspect in custody until they are ready. If they call him a suspect you must read him his Miranda rights.
An eight year-old child was killed in one of the blasts.
UPDATE: Am waiting confirmation of this report.
UPDATE: Confirmed. Police have video of suspect planting bombs.