Justin Bieber jacked a bicycle from a security guard in a Vegas casino … AND GOT CAUGHT BY A COUPLE OF GIANT GOONS … and our sources has footage of the entire botched heist.
It all went down at The Palms Casino Resort on September 14 … when JB and his crew were in town to watch the Floyd Mayweather fight.
Bieber entered the building through an employee entrance and stumbled upon a patrol bicycle in the hallway — so, he took it.
Security footage shows Justin joyriding the bike through the halls — while a security guard chased after him in an effort to get the bike back.
Eventually, a couple of bigger security guys — dressed in suits (so you know they”re not f**kin around) — cornered Justin in the hallway and forced the pop star to hand over the stolen property.
We”re told security gave Justin a stern talking to and eventually let him go.