WATCH: Amazon delivery driver charged with beating 67-year-old customer, told victim to 'check her white privilege'

21-year-old Amazon delivery driver Itzel Ramirez was arrested Thursday by police in Castro Valley, California, over an incident caught on video that captured the woman punching an elderly customer in the face repeatedly.

According to local outlet Fox 2 KTVU, Ramirez got into a verbal conflict with the 67-year-old female victim, which then escalated. Ramirez is now claiming she acted in self-defense.

The victim came to the entrance to the building due to an alert she received that an Amazon parcel had arrived. She then saw Ramirez there with the Amazon delivery driver's vest on but couldn't find the package. She inquired about the package to Ramirez, who said she would get it soon.

Fifteen minutes later, the victim asked again where the package was. That was when the argument started. The building's owner, Doug Smith, told the outlet:

"I believe the Amazon driver said something about 'your white privilege,' and my tenant said, 'You don't need to be a b*tch about it,' turned around and walked away." At that point, Ramirez started punching the unidentified victim, breaking the woman's nose in the process. Ramirez, despite being caught on video as having attacked first while the victim's back was turned, is claiming self-defense.

She is being held on $100,000 bail by Alameda County authorities on suspicion of battery causing serious bodily injury and elder abuse.