The father of Boston bombings victim Krystle Campbell - William Campbell - has told Yahoo! News: "My daughter was the most lovable girl.
"She helped everybody, and I'm just so shocked right now. We're just devastated.
"She was a wonderful, wonderful girl. Always willing to lend a hand."
Krystle - a 29-year-old restaurant manager from Arlington, Boston - was at the finish line with her friend to take a photograph of her friend's boyfriend finish the marathon when the explosions happened.
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.