Witness: Trayvon Martin knew he was being followed

Rachel Jeantel, 19, the last person to speak to Trayvon Martin, described the phone conversation she had with him before George Zimmerman shot him:

She said she was on the phone with Trayvon when someone - presumed to be Zimmerman - started following him.

Trayvon described the man as a "creepy ass cracker" Jeantel said.

Jeantel said she told Trayvon she was worries that the man was a rapist. Trayvon said to "stop playing with him like that."

While being questioned about what was happening, Trayvon said that N-word "is now following him."