(TMZ) - 11:36 AM PT THURSDAY -- Justin left the jail just moments ago ... climbing on top of an SUV and waving to a crowd of fans.
Law enforcement sources tell TMZ ... Justin blew a .04. That would not automatically make him a drunk driver -- IF he were 21 or older. But Justin is 19, and Florida has a zero tolerance for underage drinkers who drive ... and if he blows higher than a .02 it's an automatic license suspension.
Remember, he was arrested for DUI for both drugs and alcohol. If booze and drugs impaired his driving -- even if it was just a sip of liquor -- he can be convicted of DUI.
Justin Bieber was arrested for DUI and it wasn't pretty -- cops say Justin was wasted and resisted arrest and cussed the cop out, dropping multiple F bombs ... TMZ has learned.
[LISTEN: One Belieber is very upset about Justin Bieber]
Law enforcement tells TMZ ... Bieber was busted in Miami Beach and it didn't end with DUI ... he was also busted for resisting arrest without violence, drag racing and driving on an expired license.
TMZ's Harvey Levin called in to On Air with Ryan Seacrest to reveal more details about Justin Bieber's arrest. Listen below!
Part of the Police Report:
Law enforcement sources tell TMZ ... they believe Justin was under the influence of both drugs and alcohol.
According to the police report -- obtained by TMZ -- cops approached Bieber's car and the instantly realized he reeked of alcohol and had bloodshot eyes. He had a "stupor" look on his face.
[Was Justin Bieber's dad his partner in crime?]
The police report says ... Bieber was defiant from the get go, yelling at the cops, "Why the f**k are you doing this? He also yelled, "What the f**k did I do. Why did you stop me?"
When the officer tried to perform a routine pat down, Bieber said, "I ain't got no f**king weapons, why do you have to search me? What the f**k is this about?"
Close up of Bieber's mug shot:
Photo Credit Miami Beach Police Department
Photo Credit Splash News
TMZ reports the resisting arrest charge stems from Bieber refusing to take his hands out of his pockets when ordered to do so by cops.
The arrest occurred early Thursday morning.
According to TMZ, Bieber is now in custody and is at the police department where he is being tested -- presumably to more precisely measure his blood alcohol level. Law enforcement sources tell TMZ Justin was given a field sobriety test at the scene ... and failed.
His next stop will be jail, where he will be booked and processed and bail will be set.
TMZ reports Bieber had just left SET nightclub and was driving a yellow Lamborghini at the time cops spotted him in a residential neighborhood. Sources tell TMZ Justin's people actually blocked the street off so Bieber could drag race.
Sources also say the person Justin was racing was also arrested. TMZ reports that the driver was Khalil, a well-known rapper on Def Jam Records. He was in a red Ferrari.
According to TMZ, Justin had a passenger in the car -- a model.
The traffic stop was for drag racing and cops determined he was driving under the influence.
There was a photo of Chantel riding in the lambo with Bieber on Instagram, but it's since been removed, even though the pic was NOT taken at the time of the arrest.
Miami's WiOD obtained audio of Miami Beach Police Detective Vivian Hernandez confirmed the news this morning and is reporting live updates. Listen below:
Also, there's this...
And, uh, his mugshot weirdly resembles Miley Cyrus.
Photo Credit Getty Images