Martin family attorney Benjamin Crump said the link between the youth and marijuana should have no bearing on the probe into his shooting death. State and federal agencies are investigating, with a grand jury set to convene April 10.
"If he and his friends experimented with marijuana, that is completely irrelevant," Crump said. "What does it have to do with killing their son?"
The state Department of Juvenile Justice confirmed Monday that Martin does not have a juvenile offender record. The information came after a public records request by The Associated Press.
Zimmerman, 28, claimed he shot Martin in self-defense and has not been arrested. Because Martin was black and Zimmerman has a white father and Hispanic mother, the case has become a racial flashpoint that has civil rights leaders and others leading a series of protests in Sanford and around the country.
Meanwhile, the Orlando Sentinel reported that Zimmerman told police he lost Martin in the neighborhood he regularly patrolled and was walking back to his vehicle when the youth approached him from behind. The two exchanged words, Zimmerman said, and Martin then punched him in the nose, jumped on top of him and began banging his head on a sidewalk. Zimmerman said he began crying for help; Martin's family thinks it was their son who was crying out. Witness accounts differ and 911 tapes in which the voices are heard are not clear.