A man who once called George Zimmerman a friend, speaking out in support of him before and during his lengthy trial, now says he’s had a change of heart.

George Zimmerman’s former neighbor and fellow neighborhood watch volunteer says he wants to clear his conscience.

Frank Taaffe says he now believes Zimmerman should have been found guilty in the shooting death of 17-year-old Trayvon Martin.

He was once one of George Zimmerman’s most outspoken advocates, but now former neighborhood watch volunteer, Frank Taaffe says his opinion about Zimmerman’s not guilty verdict has changed.

"What I know of George and his tendencies and also my opinion is that he racially profiled Trayvon Martin that night because if that had been a white kid on a cell phone, walking through our neighborhood, he wouldn’t have stayed on him the way he did and that’s a fact and I believe that in my heart," said Taaffe.

This is very different from what Taaffe told News 13 numerous times after the shooting, including during an interview back in May 2012 when he said, "That George Zimmerman in a position in a volunteer role wanted to ensure the safety of the community he lived in and he became the victim."

But today, Taaffe claims he just wants to clear his conscience, "I can only ask for the country to forgive me and today I believe that he racially profiled him based on the color of his skin. Reporter: Some people may wonder what does Frank Taaffe have to gain by doing this? Are you working on a book? No book. A TV show? No. I’m just working on me right now and getting right with God.”

Taaffe says his brother’s death last month and the death of his two sons over the past two years has changed him. 

Taaffe says he has a message for Trayvon Martin’s parents, "I’m sorry that you lost your son, I know what that’s like and I wish things had been different."

Both George Zimmerman and his brother Robert declined to comment. 

George Zimmerman was found not guilty of second degree murder last July. The Department of Justice has an open investigation into the death of Trayvon Martin, to see if any of his civil rights were violated.