I think I found the same information as you,
Jeff. Zimmerman was not arrested
or detained.
On why Zimmerman wasn't arrested or detained after the shooting:
When the Sanford Police Department arrived at the scene of the incident, Mr. Zimmerman provided a statement claiming he acted in self defense which at the time was supported by physical evidence and testimony. By Florida Statute, law enforcement was PROHIBITED from making an arrest based on the facts and circumstances they had at the time...If the arrest is done maliciously and in bad faith, the officer and the City may be held liable.
Lee then goes on to cite Florida's "stand your ground" law as the reason Zimmerman could not be arrested. That wouldn't however, explain why even a law-abiding gun-owner who committed a purportedly justifiable homicide wouldn't have been administered drug and alcohol examinations as a matter of procedure.
The Trayvon Martin Killing, Explained - Mother Jones. The mug shot being distributed on news outlets was apparently from his 2005 arrest for assaulting a police officer.
George Zimmerman Unprotected By Self-Defense Law in Trayvon Martin Killing, Florida Lawmakers Say Police said that without evidence proving that Zimmerman attacked Martin first, they had no grounds to charge him with a crime.
Dennis Baxley, a Republican state representative and co-author of the 2005 self-defense law, said Zimmerman negated his ability to claim immunity under the law by chasing Martin.
"This law is for innocent, law-abiding citizens who are under attack by a perpetrator," Baxley told The Huffington Post. "Anyone who is out pursuing and confronting people is not protected by this statute."
"I think they need to go back and read the statute," Baxley said, referring to the Sanford Police Department.
Former Republican State Sen. Durell Peadon, another co-author of the law, said Zimmerman "has no protection under my law."