ATLANTA — Vernon Forrest made his living with his fists, but his true calling, friends say, was helping children and others with disabilities, treating them like members of his family.

The 38-year-old former two-division champion, who gained stardom when he became the first boxer to defeat Shane Mosley, was shot to death Saturday night in what police are calling an attempted robbery in Atlanta. Police Sgt. Lisa Keyes said in an e-mail Sunday that Forrest was shot several times in the back on a street just southwest of downtown. There were no suspects.

Longtime publicist Kelly Swanson called Forrest "a caring humanitarian who always stood up for what he believed to be the fairness of life."

"It was truly his calling," Swanson said of his work with children.

Olympics, when he was stricken by food poisoning and lost in the opening round. He won his first world title by defeating Raul Frank at Madison Square Garden for the vacant IBF welterweight belt in May 2001, and less than a year later handed Mosley his first career loss to capture the WBC title.

The smooth-punching Forrest defended the belt against Mosley, winning by unanimous decision six months later, before losing to Ricardo Mayora in January 2003. It was Forrest's first loss, and he'd lose again to Mayorga in a close bout many believe he won.

After taking two years off because of injuries, Forrest embarked on an impressive comeback that included a win over Ike Quartey and a victory over Carlos Baldomir for the vacant WBC junior middleweight title. Forrest defended it once, before losing it in a stunning upset to Sergio Mora in June 2008.

Like a true champion, the soft-spoken yet hard-punching Forrest reclaimed it when he won a lopsided decision last September in what turned out to be his final fight.

"He was a great fighter, a great champion," said Ken Hershman, vice president in charge of boxing at Showtime. "He was coming to the end of his career, but wasn't ready to hang 'em up. He still had a lot of life ahead of him."

There were tentative plans for a title fight against Sergio Martinez, perhaps in October, Shaw said. Plans for an August fight against Martinez were pushed back because of a rib injury, and the delay led the WBC to strip Forrest of his title.

This is the third high-profile death of a boxing champion in recent weeks.

Hall of Famer Alexis Arguello, the mayor of Managua, Nicaragua, was found dead at his home on July 1 in an apparent suicide. Two weeks ago, popular brawler Arturo Gatti was found dead in a condominium in Brazil. Gatti's wife remains the prime suspect in that case.