The first video of two men wanted for questioning in the Boston Marathon massacre.
The startling images, just released by the FBI, show two men, one in a dark baseball cap, one in a white baseball cap worn backwards, walking just a few feet apart.
They also relased these still pictures in the hope someone will recognize them.
The breakthrough came as a popular high school track star was wrongly identified as a potential suspect.
A New York Post front page headline claimed the FBI wanted to speak to two men, even though there's no evidence linking them to the crime.
It turns out they are innocent--just faces in the crowd. A young man in blue seen in the photograph is a track star at a Boston area high school.
Seventeen-year-old Salah Barhoum spoke exclusively to INSIDE EDITION and said he and his friend are innocent. "People think I did it, but I didn't do nothing. This is the worst feeling. I couldn't sleep last night. I was up all night trying to think about what's my next step."
He said his friend spoke to the FBI and has also been cleared.
A number of other innocent people have come under suspicion because of what's being called an internet witch hunt.
John Miller told Norah O'Donnell on CBS This Morning, "Amateur sleuths all over the internet did their own analysis, came up with their own photos and posted them. Then what happened, Norah, is law enforcement agencies started downloading them from the internet and started sending those around as, you know, 'does anybody know these people?' "
President Obama spoke out at an emotional prayer service for the victims of the Boston marathon massacre.
"It's pretty clear by now that they picked the wrong city to do it," said President Obama.
The president singled out Bill Iffrig, the iconic 78-year-old marathon man who got up and finished the race even after being blown over at the finish line.
The president said, "We'll pick ourselves up. We'll keep going. We will finish the race."
In the congregation was actor Bradley Cooper who's shooting a movie nearby. Former Massachusetts Governor Mitt Romney was also there. There was a standing ovation as the president told grief stricken Bostonians the whole nation stands with them.
"The world will return to this great American city to run harder than ever, and to cheer even louder for the 118th Boston Marathon," said the president.
And a team of comfort dogs, trained to console people in times of grief and crisis are patrolling the streets of Boston bringing moments of joy and relief amid the sadness and trauma.
The dog's keeper told INSIDE EDITION, "They are great listeners. They're confidential, and they just have a sixth sense. They can sense when somebody's hurting, so they help people."