LOS ANGELES--Up-and-coming rap artist Dolla was shot dead outside a landmark Los Angeles shopping mall Monday, friends and family of the slain musician were reported as saying.

The Atlanta-based musician was gunned down at the entrance to the Beverly Center, a popular shopping haunt for tourists, at around 3:00 pm (2200 GMT), the Los Angeles Times quoted Dolla's publicist as saying.

Los Angeles police have refused to confirm the identity of the 21-year-old victim, who died at Cedars Sinai Medical Center after being shot.

LAPD officer Karen Rayner said a person of interest had been detained at Los Angeles International Airport later Monday and was being quizzed.

But Dolla's publicist Sue Vannasing told the Times that her client -- whose legal name is Roderick Anthony Burton II -- was the victim.

Vannasing said the rapper had been shot in the head while he and another rapper, DJ Shabbazz, waited outside after shopping at the mall.

Vannasing told the Times Dolla had got into a fight with another passenger on a flight from Atlanta to Los Angeles earlier Monday but did not know if that incident was related to the shooting at the Beverly Center.

Los Angeles Airport Police officers identified a male passenger matching the description at an airport ticketing desk who was later discovered to be armed.

Chicago-born Dolla had signed a deal with rap star Akon's Konvict Muzik, with singles including "Feelin Myself" and "I'm Tore Up."