(AllHipHop News) Rising singer Bruno Mars was arrested in Las Vegas, Nevada this weekend for possession of drugs. According to reports, Mars was busted in a bathroom by security officers at the Hard Rock Hotel & Casino early yesterday (September 19th) morning. Police have not released what the singer, born Peter Hernandez, was in possession of. Bruno Mars, who was performing for the Walmart Soundcheck Risers concert series earlier in the evening, was charged with suspected possession of a narcotic and released. Bruno Mars, 23, is a featured singer on B.o.B.'s hit single "Nothin' On You" and Travie McCoy's latest smash single, "Billionaire." His debut album Doo-Wops & Hooligans is due in stores October 5th.