The neighbor says he heard something banging against his house in Calabasas around 7:30 PM Thursday, and when he stepped on to a 2nd floor balcony... he says he saw Justin down below hurling eggs at his front door.
According to the neighbor... Bieber started aiming for him once he stepped onto the balcony and yelled, "What the Hell are you doing?"
Justin and the neighbor, who"ve had previous run-ins, also got into a verbal dispute while JB allegedly continued tossing a few more eggs at the house ... and then retreated back to his home.
The neighbor says Justin was definitely trespassing on his property during the attack. The video is dark, but you can hear the neighbor yelling, "I see you. I f**king see you!" Then Justin yells back, "F**k you! I got another one for you, actually!"
They keep yelling back and forth for about 30 seconds, until the neighbor tells his 13-year-old daughter, who sounds terrified, to call the cops.
Justin Bieber -- Commits Vicious Egg Attack on Neighbor"s House ... Cops Called - Watch More Celebrity Videos or Subscribe
The same neighbor who called the cops on him when he was speeding through the neighborhood. Coincidence?