Updated

Prosecutors in the George Zimmerman trial are trying to introduce recordings of non-emergency calls he made to law enforcement to prove the former neighborhood watch leader is guilty of second-degree murder in shooting Trayvon Martin.

Prosecutors want to convince Judge Debra Nelson on Tuesday that a series of calls Zimmerman made to authorities about suspicious people in his Florida neighborhood in the months before the shooting indicate his state of mind that night.

State attorney John Guy said in his opening statement that Zimmerman thought Martin was one of the "punks" who "always get away" whom he'd observed previously in his neighborhood and called police about.

Defense attorneys objected to the introduction of the calls, saying they were being used in violation of evidence rules to show prior bad acts.