By Simon Vozick-Levinson
Updated September 20, 2010 at 06:17 PM EDT

Bruno Mars was arrested early Sunday morning in Las Vegas on suspicion of cocaine possession, according to police. While it was initially reported that the singer-songwriter-producer behind hits like “Nothin’ on You” and “Billionaire” had been busted with an unknown narcotic, a report issued this afternoon by the Las Vegas Metropolitan Police Department identifies the suspected substance.

Police say they were summoned to Las Vegas’ Hard Rock Casino at 1:50 A.M. on Sept. 19 “to investigate the report of a Latin male adult being detained by hotel security.” Mars, born Peter Hernandez, had performed at the venue hours earlier. Police say they found Mars with 2.6 grams of “‘white powdery substance’ believed to be cocaine.” He was booked and released at 7:45 A.M. the same day and has not yet been charged.

UPDATE: A spokesperson for the Clark County District Attorney’s office says that it will probably decide whether or not to proceed with criminal charges by the end of this week. If charges are filed, Mars will most likely be due to appear in court Nov. 18.

Reps for Mars have not yet commented on his arrest.

(Follow the Music Mix on Twitter: @EWMusicMix.)

More on the Music Mix: