Investigators in Boston are hunting a suspect in the marathon bombings who was identified from CCTV footage.
They are trying to piece together the bombs from remnants found on site, Daybreak's Lucy Watson reports.
New photos of the suspects identified by officials as Dzhokar A. Tsarnaev, 19 and Tamerlan Tsarnaev, 26 have been released.
The FBI has released pictures and video of two suspects in the Boston Marathon bombing, seeking the public's help.
President Obama attended a memorial service in Boston today, paying tribute to the victims of Monday's terrorist attack.