updated 04/12/2012 AT 7:20 AM ET
•originally published 04/11/2012 AT 3:15 PM ET
George Zimmerman, the neighborhood watch volunteer in Florida who fatally shot unarmed teenager Trayvon Martin in February, has been charged with murder in the second degree, special prosecutor Angela Corey announced Wednesday.
Zimmerman surrendered to authorities and is currently in custody. On Thursday’s Today show, his new attorney, Mark O’Mara, said his client will enter a plea of not guilty.
In Florida, a charge of second-degree murder carries a maximum sentence of life in prison, according to CNN.
Lawyers for Zimmerman, 28, stepped down from the case Tuesday, saying Zimmerman had been uncommunicative and expressing concern for his emotional and physical well-being.