TMZ confirms that cops got a call at around 7:30pm after the "Sorry" singer's security detained the woman, believed to be in her 40's.
This is the third time this week that the fan has invaded the property.
Both other times, Justin's bodyguards warned her to stay away from the vicinity but it looks like she just didn't get the message.
Justin was home at the time of the arrest but did not encounter the woman.
She has been charged with trespassing.