Los Angeles County sheriff's deputies are serving a felony search warrant at the Calabasas residence of singer
Sheriff's spokesman Steve Whitmore said eight people are being detained inside Bieber's home, including the singer.
"They are being cooperative," Whitmore said. "We will seek to question Mr. Bieber in connection with a felony investigation."
Whitmore said no arrests had been made. It is common practice to temporarily detain people while a search warrant is being served.
The egging incident marks the latest clash between the pop star and his neighbors, who have accused him of throwing loud parties and speeding through the neighborhood.
The neighbor called authorities last week, saying someone was pelting his home with eggs, said sheriff's Sgt. Dan Nagelmann of the Malibu/Lost Hills station.
The neighbor was home with his daughter at the time, Nagelmann said, adding that deputies who went to the scene found no one outside.
Whitmore said the egging incident was determined to be a felony because it caused several thousand dollars worth of damage.
Bieber has been at the center of a number of controversies that have caused friction with his neighbors in the wealthy, gated community where he lives.
In a grainy video posted on TMZ that purportedly documents the incident, a man standing in the doorway of a home exchanges expletives with a voice outside before telling someone in the house to call authorities.
"I got another one for you, actually," the person outside yells back in the video, before apparently hitting the house with more eggs.
Sheriff's deputies said video footage and photos had been submitted as evidence.
Nagelmann said the neighbor told deputies he had seen Bieber throwing the eggs. The offense in the initial police report is listed as misdemeanor vandalism, according to the Sheriff's Department.
Authorities said it was unknown what prompted the egging.