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Trayvon Martin's parents have suddenly found themselves on the defensive as new reports portray their slain Florida teenage son as the aggressor in a case that has garnered national attention.

The 17-year-old's parents are blaming police for leaking information about their son being suspended from school for marijuana and details about the fight he had with volunteer neighborhood watchman George Zimmerman.

Trayvon Martin's mother, Sybrina Fulton, and family attorneys said Monday that it was part of an effort to demonize her son who was shot and killed last month by George Zimmerman, who is half Peruvian. Zimmerman, 28, said he acted in self-defense and he has not been arrested.

"They killed my son and now they're trying to kill his reputation," Fulton told reporters.

Martin was suspended by Miami-Dade County schools because traces of marijuana were found in a plastic baggie in his book bag, family spokesman Ryan Julison said. Martin was serving the suspension when he was shot Feb. 26.

They killed my son and now they're trying to kill his reputation.

— Sybrina Fulton, Trayvon Martin's Mother

Trayvon Martin Attacked George Zimmerman, Report Says

The Sanford Police Department said it had not authorized the release of new information, but acknowledged there may have been a leak. City Manager Norton Bonaparte, Jr. said it would be investigated and the person responsible could be fired.

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.

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Zimmerman said 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.

The Sanford police statement said the newspaper story was "consistent" with evidence turned over to prosecutors.

Despite the news of Martin's possible actions the night of the shooting, rallies demanding the arrest of the 28-year-old Zimmerman spread from Florida to Indiana.

Thousands rallied Monday on the steps of the Georgia state Capitol. The crowd chanted "I am Trayvon!" and "Arrest Zimmerman now!" The protest ended with the crowd linking hands and singing, "We Shall Overcome."

Students from Morehouse College, Spelman College and Clark Atlanta University encouraged their fellow students to talk to their lawmakers about gun laws. Students wore hoodies reading, "I am Trayvon Martin" and lofted signs reading, "Don't shoot!" and "I could be next."

"We're humans, and even more so, we're American citizens, and we have the expectation that justice will be delivered," said Ronnie Mosley, 20, a student at Morehouse who helped organize the rally.

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Back in Sanford, city officials named a 23-year veteran of the police department as acting chief. The appointment of Capt. Darren Scott, who is African-American, came days after Chief Bill Lee, who is white, temporarily stepped down as the agency endured a barrage of criticism over its handling of the case.

"I know each one of you — and everyone watching — would like to have a quick, positive resolution to this recent event," Scott told reporters. "I urge everyone to let the system take its course."

The Sanford City Commission held its first meeting Monday since giving Lee a no confidence vote, which led to his ouster. Martin's parents both addressed the panel, urging them to take steps to arrest Zimmerman. More than 500 people crowded into the meeting, which was moved from City Hall to the Sanford Civil Center.

"We are asking for justice," said Tracy Martin, the teenager's father.

Civil rights leader Al Sharpton warned commissioners that Sanford risked becoming a twentyfirst-century version of civil rights struggle in the South during the 1960s.

Sharpton said Martin's parents endured "insults and lies" Monday over reports that their son attacked Zimmerman.

Also Monday, an attorney for Martin's mother confirmed that she filed trademark applications for two slogans containing her son's name: "Justice for Trayvon" and "I Am Trayvon." The applications said the trademarks could be used for such things as DVDs and CDs.

The trademark attorney, Kimra Major-Morris, said in an email that Fulton wants to protect intellectual property rights for "projects that will assist other families who experience similar tragedies."

Asked if Fulton had any profit motive, the attorney replied: "None."

Based on reporting by the Associated Press.

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