The lead investigator in the Trayvon Martin case says murder suspect George Zimmerman could have defused the confrontation with the unarmed teenager if he would have identified himself as a neighborhood watch leader.

READ: Police report | Exemption list

Sanford Detective Chris Serino's written report, which was released Tuesday, said Zimmerman verbally confronted Martin but didn't identify himself before the physical fight ensued and he shot and killed the 17-year-old. 

Another investigator wrote that on the night of the shooting, two lie detector tests given to Zimmerman found he wasn't lying about what happened. The results of such tests are usually not admissible in court

Evidence released Tuesday included video and audio recordings of Zimmerman, as well as written statements from Zimmerman and police, including a police report previously released by Zimmerman's attorney, Mark O'Mara, but not redacted in some areas as before. The report contains the results of Zimmerman's voice stress test, along with Zimmerman's account of the events and written statements.

In the recordings, more information was redacted than the ones released last week by O'Mara.

The reports show that at one point, while being interviewed by detectives, Zimmerman said he was "observing Martin from his vehicle, because, as he told investigators, he was afraid of Martin."

But, the police report went on to say that later in the encounter, "Zimmerman exited his vehicle and followed Martin in an effort to maintain surveillance of him while waiting for police."

An investigator wrote, "His actions are inconsistent with those of a person who has stated he was in fear of another subject."

During the voice stress test, Zimmerman was asked whether he confronted the man he shot, and he replied no. When asked whether he was in fear for his life, Zimmerman replied yes.

Zimmerman, who is in jail after a judge revoked his bond, is scheduled to have another hearing Friday.

Lead detective in Martin case reassigned

Sanford police said Tuesday that Serino, the lead detective in the Martin case, has been reassigned to the patrol division at his request.

Serino recommended after his initial investigation that George Zimmerman be charged with manslaughter in the unarmed teenager's Feb. 26 shooting death.

Zimmerman cited Florida's "stand your ground" law that gives wide latitude to people defending themselves. More than a month later after a nationwide outcry, Zimmerman was charged with second-degree murder and has pleaded not guilty, claiming self-defense.

The police statement said Serino made the reassignment decision "of his own volition." He will begin his new assignment in July. He did not have a listed number.