Shakur was born in the Harlem neighborhood of New York City but relocated to the San Francisco Bay Area in 1988. He later moved to Los Angeles in 1993 to further pursue his music career. By the time he released his debut album 2Pacalypse Now in 1991, he had become a central figure in West Coast hip hop, introducing social issues in the genre at a time when gangsta rap was dominant in the mainstream. Shakur achieved further critical and commercial success with his follow-up albums Strictly 4 My N. I. G. G. A. Z. . . (1993) and the critically acclaimed Me Against the World (1995), which is considered to be his magnum opus. Later that year, after suffering legal troubles and a robbery and shooting, Shakur became heavily involved in the growing East Coast–West Coast hip hop rivalry. His double-disc album All Eyez on Me (1996) became certified Diamond. On September 7, 1996, Shakur was shot four times by an unknown assailant in a drive-by shooting in Las Vegas; he died six days later and the gunman was never captured. The Notorious B. I. G. , Shakur's friend turned rival, was at first considered a suspect, but was also murdered in another drive-by shooting several months later. Five more albums have been released since his death, all of which have been certified Platinum.