Justin Bieber was arrested for DUI early Thursday morning 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.
Justin posed for a smiley mug shot moments after the arrest -- while sporting a jail-issued orange jumpsuit.
Law enforcement tells us ... 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.
Law enforcement sources tell TMZ ... they believe Justin was under the influence of both drugs and alcohol.
In fact, officials held a news conference and said, "[Justin] made statements he had consumed some alcohol, been smoking marijuana and consumed some prescription medication."
According to the police report -- obtained by TMZ -- cops approached Bieber's car and they instantly realized he reeked of alcohol and had bloodshot eyes. He had a "stupor" look on his face.
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?" Bieber claimed he wasn't drunk and coming back from recording music. That's not true, because we knew he was at a club.
Now the basis for the resisting arrest charge -- Before the pat down, as Bieber got out of the car, he "kept going into his pants pocket." The cop ordered him to put his hands on the vehicle, and Bieber initially complied but soon took his hands off the car, turned and then cussed out the cop. The cop then grabbed Justin by the right arm, Justin pulled his arm away, and said, "What the f**k are you doing?"
The report says Justin was driving between 55 and 60 MPH in a 30 MPH residential area.
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. Our law enforcement sources say 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.
We're told Bieber had just left SET nightclub and was driving a yellow Lamborghini at the time cops spotted him in a residential neighborhood. Our sources say Justin's people actually blocked the street off so Bieber could drag race.
Sources say the person Justin was racing was also arrested. We're told that driver was Khalil, a well-known rapper on Def Jam Records. He was in a red Ferrari.
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.
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