Experts Says it Will Be Hard To Refute George Zimmerman's Claim of Self-Defense

Charged with second-degree murder in the shooting of Trayvon Martin

(CBS) -- Among the strongest evidence in George Zimmerman's defense may be George Zimmerman himself, several experts say - in part, because it may prove difficult for prosecutors to refute his claim that he killed Trayvon Martin in self-defense.

Zimmerman, a former neighborhood watch captain, is charged with second-degree murder in the shooting death of the teen during an altercation in February 2012 in Sanford, Fla. His case  is set to go to trial Monday, June 10.