- Evidence of THC, an ingredient in marijuana, was found in Martin's blood, tests show
- George Zimmerman, 28, shot teenager Trayvon Martin on February 26 in Florida
- He wasn't arrested immediately, but murder charges were announced on April 11
(CNN) -- Trayvon Martin had drugs in his system when he was fatally shot earlier this year by George Zimmerman in Sanford, Florida, according to autopsy results released Thursday.
Martin's blood contained THC, which is the psychoactive ingredient in marijuana, according to an autopsy conducted February 27 -- the day after the teenager was shot dead.
Toxicology tests found elements of the drug in the teenager's chest blood -- 1.5 nanograms per milliliter of one type (THC), as well as 7.3 nanograms of another type (THC-COOH) -- according to the medical examiner's report. There was also a presumed positive test of cannabinoids in Martin's urine. It was not immediately clear how significant these amounts were.
He died from a gunshot wounded to chest fired from "intermediate range," according to the medical examiner's report, which was one of several documents on the case released Thursday by the office of special prosecutor Angela Corey.
The autopsy report lists the manner of death as a homicide.
Zimmerman, 28, is charged with second-degree murder for killing Martin in the Sanford neighborhood where the African-American teen was staying.
Prosecutors have said Zimmerman, who is a white Hispanic, killed the unarmed teenager unjustly after profiling him. Zimmerman, who has pleaded not guilty, has said that he shot Martin in self-defense.
The start of the trial hasn't been set.
The case shined a spotlight on race relations, spurring protests nationwide and drawing prominent civil rights leaders to central Florida denouncing the actions of Sanford police and calling for Zimmerman's arrest. Special prosecutor Angela Corey announced he'd been charged on April 11, weeks after Sanford police initially declined to do so.
It also raised questions about gun laws, as well as the merits of the "Stand Your Ground" law in Florida, and similar laws in other states that allow people to use deadly force anywhere they feel a reasonable threat of serious injury or death.
CNN's Vivian Kuo and InSession's Jessica Thill contributed to this report.
